Direct speech : - Direct speech is used to report or rather repeat the words spoken by the speaker or writer in the way it is told by the speaker .

Indirect speech : - Indirect speech is the way in which you convey what someone said to another person, not necessarily using the exact words of the speaker.

Changing Indirect Speech into Direct Speech:  When we write a sentence in indirect Speech we  use the coordinating conjunctions to join the two parts.  In direct speech while converting the sentence into direct speech we separate the introducing verb by a comma and a quoted speech. The quoted speech always begins with a capital letter and is placed within inverted commas.

Change in tenses: We often have to change the tense of the verb in the spoken words. A verb in the simple past usually changes to the simple present in direct speech:

• Aly said all books were in that drawer. ( Indirect Speech )
• All books are in this drawer"; said Aly. ( Direct Speech )

In the question : -

1. He said that she had completed her work.

The Direct speech of the above sentence is :

He said, “she has completed her work”.

While converting into direct speech , firstly , place reporter 's speech into inverted commas , then convert past perfect into present perfect tense means had change into has and then place object of the sentence which is work here .

2. He said that he was happy.

The Direct speech of the above sentence is :

He said , “I am happy”.

While converting into direct speech , firstly , place reporter 's speech into inverted commas , then convert simple past tense into simple present tense means was change into is and then place object of the sentence which is happy here .

Thus , the Correct Option is C , which is  1. He said, “she has completed her work”. 2. He said , “I am happy”.

Direct speech : - Direct speech is used to report or rather repeat the words spoken by the speaker or writer in the way it is told by the speaker .

Indirect speech : - Indirect speech is the way in which you convey what someone said to another person, not necessarily using the exact words of the speaker.

Changing Indirect Speech into Direct Speech:  When we write a sentence in indirect Speech we  use the coordinating conjunctions to join the two parts.  In direct speech while converting the sentence into direct speech we separate the introducing verb by a comma and a quoted speech. The quoted speech always begins with a capital letter and is placed within inverted commas.

Change in tenses: We often have to change the tense of the verb in the spoken words. A verb in the simple past usually changes to the simple present in direct speech:

• Aly said all books were in that drawer. ( Indirect Speech )
• All books are in this drawer"; said Aly. ( Direct Speech )

In the question : -

1. She said that Irvin had arrived on Sunday.

The Direct speech of the above sentence is :

She said, “Irvin arrived on Sunday.”

While converting into direct speech , firstly , place reporter 's speech into inverted commas , then convert Simple Past perfect Changes to Past simple means had arrived change into arrived and then the object which is sunday here .

2. She said that she would be in Scotland the next day.

The Direct speech of the above sentence is :

She said, “I will be in Scotland tomorrow.” 

While converting into direct speech , firstly , place reporter 's speech into inverted commas , Present Conditional changes into future tense means would be change into will be and then the object which is Scotland here .

Thus , the Correct Option is A , which is 1. She said, “Irvin arrived on Sunday.” 2. She said, “I will be in Scotland tomorrow.”

Direct speech : - Direct speech is used to report or rather repeat the words spoken by the speaker or writer in the way it is told by the speaker .

Indirect speech : - Indirect speech is the way in which you convey what someone said to another person, not necessarily using the exact words of the speaker.

Changing Indirect Speech into Direct Speech:  When we write a sentence in indirect Speech we  use the coordinating conjunctions to join the two parts.  In direct speech while converting the sentence into direct speech we separate the introducing verb by a comma and a quoted speech. The quoted speech always begins with a capital letter and is placed within inverted commas.

Change in tenses: We often have to change the tense of the verb in the spoken words. A verb in the simple past usually changes to the simple present in direct speech:

• Aly said all books were in that drawer. ( Indirect Speech )
• All books are in this drawer"; said Aly. ( Direct Speech )

In the question : -

They told me that they had been playing basketball.

The Direct speech of the above sentence is :

They told me ," We were playing basketball” .

While converting into direct speech , firstly , place reporter 's speech into inverted commas , then convert past perfect continuous into past continuous tense means were change into had been and then place object of the sentence which is football here .

Thus , the Correct Option is B , which is They told me ," We were playing basketball” .