Where does the term
“box office” come
from?

The term 'box office' originated in Elizabethan era, when affluent people would sit in private 'boxes' to watch theater. Tickets for boxes were sold at an 'office', called box office. In contemporary times, 'box office collection' means earnings generated by ticket sales after a film's release.

Explanation:

the answer is chicken breast with a green salad and a serving of vegetables.