magna cum laude

i’m a senior in the department of anthropology and i would like to graduate magna cum laude in order to apply for phd fellowships after my master’s.

currently, i am on track to graduate with 30.5 credits and straight A’s besides 1 B and 1 N/C. what is the likelihood that i’ll graduate magna cum laude?

i saw some people talking abt how a student’s department holds some sway in determining whether they’re selected to graduate magna cum laude. is there a way to petition the department of anthro and ask them to consider me?