1) I had to wrack my brain and plum the depths of my resources the foul consequences of my previous vice.

Which of the following homophones should be used to correct the sentence above?
A. Fowl
B. Plumb
C. Rack
D. Vise

2) Which of the following sentences correctly uses subject-verb agreement?

A. computers has made our jobs easier.
B. Those two girls in the first row is best friends.
C. The dogs in our backyard growls late at night.
D. The tennis balls roll into the parking lot.