Explanation:

- Option 1: to answer

- This part correctly follows the phrase "simple for me" and is grammatically sound.

- Option 2: is quite too

- This part contains an error. The phrase "quite too" is incorrect. It should be either "quite" or "too" but not both together as they serve similar purposes in expressing degree.

- Option 3: simple for me

- This part is grammatically correct and logically follows from "is quite too."

- Option 4: This question

- This part correctly introduces the subject of the sentence.

- The error lies in Option 2: is quite too as it combines two similar intensifying adverbs incorrectly.

""