Answer: (B) nervous of the slight change he can sense.
Explanation:
These answers are correct!
Looking at the subject will help clarify the right verb.
7. "bark" is singular, therefore "has" is correct because it is singular
8. "cats and monkeys" is plural, therefore "have" is correct because it is plural
9. "summer camps" is plural, therefore "are" is correct because it is plural
The answer is weakness under oppression