Question

vitor said he couldnt wait to get to high school because he would be able to sit wherever he wanted in the cafeteria and have so much freedom. mrs. wy said ____ because in high school the work was also harder and meant more.
a. the grass isnt always greener on the other side
b. take it with a grain of salt
c. costs an arm and a leg

Explanation:

Vitor is excited about high - school freedoms but Mrs. Wy points out there are also drawbacks like harder work. "The grass isn't always greener on the other side" means things may not be as good as they seem in another situation. "Take it with a grain of salt" means not to believe something completely. "Costs an arm and a leg" means something is very expensive. The first idiom fits the context.

Answer:

A. the grass isn't always greener on the other side