Select the correct indirect form of the given sentence.

"When will I be able to vote?" I asked my mother.

I asked my mother when I would be able to vote.

The correct indirect form of the given sentence is:

I asked my mother when I would be able to vote.

The other options are incorrect for the following reasons:

• I asked my mother when would he be able to vote. The pronoun "he" should be replaced with the pronoun "I", since the speaker of the question is asking about their own ability to vote.
• I asked to my mother when I will be able to vote. The word "to" is unnecessary in indirect speech.
• I asked my mother when would I be able to vote. The word "would" should be placed before the verb "be able to vote".