A or D I think, but I really think it's A.
D is the best out of all those options
Don’t hate me if i’m wrong but this is from google
Noun. carnivore (plural carnivores) An organism that feeds chiefly on animals; an animal that feeds on meat as the main part of its diet.
car·niv·o·rous
/ˌkärˈniv(ə)rəs/
Learn to pronounce
adjective
(of an animal) feeding on other animals.
car·niv·o·rous
/ˌkärˈniv(ə)rəs/
Learn to pronounce
adjective
(of an animal) feeding on other animals.
I would go with answer choice A) He argued his point persuasively.