Convert the following sentence from Indirect Speech to Direct Speech:…

The correct answer is Option (1) → She asked, "Do you think there is something wrong with the plan?"

Yes/no question: indirect to direct speech:

Change	Indirect	Direct	Why
Reporting verb	asked him if	asked, “Do you think ...?”	“Asked ... if” shows a yes/no question, so the direct speech is a question beginning with a helping verb: “Do you think ...?” A question mark closes the quoted words.
Pronoun change	he	you	The person spoken to is addressed directly, so “he” becomes “you”.
Tense change	thought, was	think, is	The past forms go back to the present of the actual words: “thought” becomes “think”, “was” becomes “is”.
Full sentence	She asked him if he thought there was something wrong about the plan.	She asked, “Do you think there is something wrong with the plan?”

Example: He asked me if I liked tea. → He asked, “Do you like tea?”

Why the Other Options are Incorrect?

Option 2: She said, "Is there something wrong with the plan ?" — Incorrect. "Do you think" is lost, so the question is no longer about his opinion, and "said" does not suit a question.

Option 3: She asked, " Do you believe the plan is wrong?" — Incorrect. The meaning changes: "something wrong with the plan" (a fault in it) is not the same as "the plan is wrong".

Option 4: She said, "How can you say anything wrong about the plan?" — Incorrect. It becomes a wh-question of protest, which is not what she asked.