Answer:
(C) Brown could seek an injunction against Watkins, on the basis of nuisance
Explanation:
The bugs and pests from Watkins grass clipping pile are a menace to his neighbour Brown.
Brown has tried extermination but the source of the problem, which is still there, makes his efforts futile.
Brown now has the right to seek an injunction - a court order controlling or restricting a person's behaviour - against Watkins on the basis of nuisance.
Watkins should comply