The correct answer is C. past tense.
Past tense is a grammatical tense used to describe an action or event that is done in the past. "Mixed" has a regular form "mix" and by adding "-ed" to it, it becomes a past tense.
Shouldn’t there be someone who’s asking this question ?
A seems the most right because if the girl is developing so is the setting because the girl is the setting
He disagreed with his sister on the subject of Trump vs. Clinton.