Select the correct indirect form of the given sentence.

I said to my mother, “I will certainly take you to Bangalore this week.”

I told my mother that I would certainly take her to Bangalore that week.

The correct indirect form of the given sentence is:

I told my mother that I would certainly take her to Bangalore that week.

The other options are incorrect for the following reasons:

• I told my mother that she would certainly take her to Bangalore that week. - This sentence is a bit confusing, as it seems to be saying that the speaker's mother would be taking herself to Bangalore.
• I told my mother he would certainly take her to Bangalore that week. - This sentence is incorrect because the pronoun "he" should be changed to the pronoun "I".
• I told to my mother that I would take you to Bangalore that week. - The word "to" is unnecessary before the pronoun "my mother".