Love and immortality because Shakespeare is saying that the love he has for his partner will live on within this poem, so she, in turn, will be immortal.
I’m pretty sure you don’t need a comma there. You would need a comma if it was like “Nakia likes to read comic books, magazines, and scary stories on the weekends.
The answer is 2, because they introduce his doings similarly, by using "And" and "A".