Since the prompt revolves around the character's friend moving away, a few concepts you could consider are:
- Brooke is in denial about her friend moving and makes some attempt to stop her despite not being able to
- Kayla begins packing and the reality of the situation fully hits her
- Brooke fears that she'll lose contact with Kayla once she moves away, or vice-versa
- Kayla is afraid she won't be able to adjust to her new surroundings or make new friends
Afterward is the correct answer
I think it is A) Reference
Gravity is a natural phenomenon
or
Mirages are a common desert phenomenon
Each time a new social media app is revealed to the world it becomes a phenomenon for a while and then slowly fades into unimportance
The party he had was a surpise