PLEASE HELP ME! I will not accept non sense answers. But, I will give BRAINLIEST for whoever gives the correct answer with full solutions.

Answer:
The B
Step-by-step explanation:
n is The number of violence she make so n may start from 0 to positive infinity when you insert 0 f(0) be negative when you insert positive numbers you get positive so the answer will be integer
Hope it may give you clu or hint