Correct Answer: The mother asked the maid if the children had put away their toys.

Solution : The correct choice is the first option.

Explanation:
The indirect form (also known as reported speech) is used to report what someone else has said without quoting their exact words. In the indirect form, we often need to change pronouns, verb tenses, and some other words to maintain grammatical correctness.
Narration conversion:

• Change the reporting verb "said" to "asked".
• The present perfect tense "Have the children put away their toys" changes to the past perfect tense "had put away".
• "If" is used to introduce the reported clause in the case of yes or no questions.

Therefore, the indirect form would be: The mother asked the maid if the children had put away their toys.