5. She's a vegetarian.
a. She isn't eating meat. Wrong – we don't use the present continuous to describe
a state (she is a vegetarian).
b. She don't eat meat. Wrong – you need another form of the verb "to do" with
"she".
c. She doesn't eat meat. – Correct - we can use the present simple to
describe a state (she is a vegetarian).
d. She doesn't eating meat. Wrong.