Select the option that expresses the given sentence in indirect speech.

“I will work hard to get the first rank in class,” said Rohan.

Rohan said that he would work hard to get the first rank in class.

The correct answer is:

Rohan said that he would work hard to get the first rank in class.

When converting direct speech to indirect speech, we need to make the following changes:

• Remove the quotation marks.
• Change the reporting verb to one that is appropriate for the mood of the sentence in direct speech. In this case, the reporting verb "said" is retained because the sentence in direct speech is a declarative sentence.
• Change the pronouns to match the subject and object of the reporting verb. In this case, the pronoun "I" in the direct speech sentence is changed to "he" in the indirect speech sentence because the subject of the reporting verb is Rohan.
• Change the verb tense to match the tense of the reporting verb. In this case, the verb tense in the direct speech sentence is future tense, so the verb tense in the indirect speech sentence is also future tense.

Therefore, the correct indirect speech sentence is:

Rohan said that he would work hard to get the first rank in class.