honestly, "as the devil would have it" has a negative effect on the person/thing because as we all can agree, NOONE should mess with the devil :)))
The correct answer is A. When the subject of a sentence is singular, add "_s" to the base form.
An easy example is "to exist", the base form is "exist" and A strawberry exists shows that you add s when a singular subject is used.
That sounds really demanding. You know, a lot of responsibilities.
pretty sure it would be sign up, like 99.9 percent sure