Select the most appropriate direct form of the given sentence.
Kavya asked her sister whether she needed her help in arranging their room.

Correct option is B

The correct direct speech is (b).
Rules of conversion (Indirect ➜ Direct) in detail:
· Reporting verb “asked” for a yes/no question becomes “said to …, ‘Do/Did…?’” in direct form; the interrogative structure is restored.
· Connector “whether/if” used in indirect speech disappears in direct speech and is replaced by the auxiliary at the beginning ( Do/Does/Did).
· Pronoun changes are reversed appropriately: her sister → you; her help → my help; their room → our room (shared by speaker and addressee).
· Tense returns to the likely original present ( need) because the reported sentence is a general present-time question.
· Punctuation: Use quotation marks and a question mark within the quoted question.
Why others are incorrect:
· (a) Keeps third person “she… her” and the pronoun set from indirect speech— wrong in direct address.
· (c) Uses “their room” instead of “our room.”
· (d) Ungrammatical structure starting with “Whether” in a direct interrogative.