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.

Direct Speech -Change in Exclamatory Sentence: If the indirect command ends with full stop,we can change this to an exclamation mark. We use the reporting verbs exclaimed, praised, cried out, applauded, regretted, wished, desired etc. With exclaimed we generally use an expressions for feelings such as exclaimed with fear or joy etc. We also use the conjunction that to introduce the reported sentence and change to an appropriate past tense.

• Gaurav exclaimed with joy that they had won the match. (Indirect Command)
• Gaurav said, "Hurrah! We have won the match."  (Direct Command)

In the question : -

He exclaimed with joy that he had won a prize.

The direct speech of the above sentence is :

He said, “Hurrah! I won a prize” .

While converting into direct speech , place reporter 's speech into inverted commas , then change exclaimed with joy into hurrah with exclamation mark , then he is converted into I ,  then present perfect converts into simple past means had won converts into won , then the objective part a prize .

Thus , the Correct Option is D , which is He said, “Hurrah! I won a prize” .

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.

Direct Speech -Change in Exclamatory Sentence: If the indirect command ends with full stop,we can change this to an exclamation mark. We use the reporting verbs exclaimed, praised, cried out, applauded, regretted, wished, desired etc. With exclaimed we generally use an expressions for feelings such as exclaimed with fear or joy etc. We also use the conjunction that to introduce the reported sentence and change to an appropriate past tense.

• Gaurav exclaimed with joy that they had won the match. (Indirect Command)
• Gaurav said, "Hurrah! We have won the match."  (Direct Command)

In the question : -

1. The child exclaimed with delight that the sight was very beautiful.

The direct speech of the above sentence is :

The child said, ‘What ! a beautiful sight’

While converting into direct speech , place reporter 's speech into inverted commas , then change exclaimed with delight into what with exclamation mark ,  then simple past was is converted into is  , then the objective part very beautiful  .

2. The candidate exclaimed with disapproval that the problem was very difficult.

The direct speech of the above sentence is :

The candidate said, ‘How ! difficult the problem is’

While converting into direct speech , place reporter 's speech into inverted commas , then change exclaimed with disapproval into how with exclamation mark ,  then simple past was is converted into is  , then the objective part very difficult  .

Thus , the Correct Option is C , which is 1. The child said, ‘What ! a beautiful sight it is !’ 2. The candidate said, ‘How ! difficult the problem is’ .

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.

Direct Speech - Change in Advise or Command Statement: In command and request statements : The imperative verb of the indirect command  is changed to a infinitive in the direct command. We use words expressing command or request such as ordered, commanded, shouted, demanded etc. We also often change the saying verb to tell.

• Dad told me to do my work. (Indirect Command)
• Dad,"Do your work".(Direct Command)

In the question : -

She exclaimed with sorrow that she failed in the exam.

The direct speech of the above sentence is :

She said, “Alas! I failed in exam” .

While converting into direct speech , place reporter 's speech into inverted commas , then change exclaimed with sorrow into alas to show sadness with exclamation mark , then she converts into I ,  then use failed as verb  , then the objective part in the exam.

Thus , the Correct Option is B , which is She said, “Alas! I failed in exam” .