Question

Which sentence demonstrates an error in parallel structure?
A.
The police arrested the suspect for robbing a bank and because he drove a stolen car.
B.
The oil spill will destroy animal and plant life in the marsh and will pollute the beaches.
C.
To repair the Hubble telescope, astronauts needed to replace the primary camera and the battery units.
D.
Before you take that swimming class, you should know how to float on your back and submerge your face.

Answer 1

a seems weird

Answer 2

b should have commas

Answer 3

so does c

Answer 4

but d is lacking a comma to

Answer 5

so c and d are alike

Answer 6

nvm i dont a is it

Answer 7

i have no clue :'(