Answer:
B. great quantity
Step-by-step explanation:
Profusion means extremely amount of something. The word profusion is a noun derived from the adjective profuse. The adjective has been turned into a noun by adding to the root the sufix ion. This is a sufix because it is attached to the end of the root: profuse + (e) turns into (i) = ion. Profuse means abundant and profusion means the state of being abundant.