Question

1. aisha is a new student at her school. her classmates are all friendly and helpful, but at times, aisha feels a bit confused. for example, in chemistry class someone blurts out, lemons and h2o for breakfast! and everyone seems to understand and they laugh. what is going on with her classmates?

they are obsessed with lemons.
they are pulling a prank on the chemistry teacher.
they are referring to an in - joke.
they are confused as well but dont want to admit it.

Explanation:

Aisha is new and doesn't understand the in - joke her classmates are referencing (about lemons and H₂O in chemistry class), while others get it and laugh. The other options don't fit: being obsessed with lemons is too simplistic, pulling a prank on the teacher isn't indicated, and the “confused but don't admit” option doesn't match the context of an in - joke.

Answer:

B. They are referring to an in - joke.