María, ¿me quieres dar el pan, por favor? a. sí, te lo doy ahora mismo. b. sí, te la doy ahora mismo. c. sí, me lo doy ahora mismo. d. sí, me la doy ahora mismo.

The answer is A. Si, te lo do ahora mismo

This is because you need to use the masculine singular lo because you are referring to el pan and you need to use te because you are saying "to you"

A because that means yes I will give it to u right now

Because it’s a specified person/thing

I'm not sure if you mean for us to translate or to answer. but i'll translate as these are questions for you to answer. 1. how long has it been since you've read a book? . 2. how long has it been since you've eaten breakfast? . 3. how long has it been since you've talked with your spanish professor?