Select the correct indirect form of the given sentence.Mrs Menon said…

The correct answer is Option (1) → Mrs Menon asked the class who had written that poem on the blackboard.

Changing a question into indirect speech:

Change	Direct	Indirect	Why
Reporting verb	said to the class	asked the class	The spoken words are a question, so “said to” becomes “asked”.
Joining word	“ ” (quotation marks)	who	The question word “who” itself joins the question. The “?” is dropped.
Word order	Who wrote	who had written (order kept)	“Who” is the subject of “wrote”. So the order is already that of a statement, “who” + verb, and nothing moves.
Tense change	wrote	had written	“Wrote” is in the simple past. The simple past is formed with the past form of the verb (V2). After the past “said” it becomes the past perfect “had written”. The past perfect is formed with had + past participle (V3).
Time and place words	this	that	The words are reported later. So “this poem” becomes “that poem”.
Full sentence	Mrs Menon said to the class, “Who wrote this poem on the blackboard?”	Mrs Menon asked the class who had written that poem on the blackboard.

“What” works the same way when it is the subject. Example: Raj said, “What fell from the shelf?” → Raj asked what had fallen from the shelf.

Why the Other Options are Incorrect?

Option 2: Mrs Menon asked the class who had written this poem on the blackboard. — Incorrect. “This” is not changed. In the report it becomes “that”.

Option 3: Mrs Menon asked the class that who had written that poem on the blackboard. — Incorrect. “That who” puts two joining words together. A question with “who” is joined by “who” alone.

Option 4: Mrs Menon asked the class who has written that poem on the blackboard. — Incorrect. “Has written” is the present perfect. After the past “said”, “wrote” must become “had written”.