Which possessive pronoun may function as an adjective?
a. ours
b. mine
c. my
d. yours

C. My

You can easily see that if you plug in the above choices into a simple sentence with an adjective, 'my' is the only pronoun that can replace the adjective and still make sense.

I like green cars. (sentence)

I like ours cars. (no)

I like mine cars. (no)

I like my cars. (yes!)

I like yours cars. (no.)

the character has felt many emotions that are mainly focusing on negative emotions.

greet them:

buenas noches.

that is considered night time which is when "good night" is used.