If there is a problem with this sentence, choose the answer that fixes it. Remember that semicolons only separate complete sentences and a sentence expresses a complete idea - do both of these phrases refer to the same idea?
a. Many environmentalists are concerned about the spotted owl. Which is almost extinct.
b. Many environmentalists are concerned about the spotted owl, which is almost extinct.
c. Many environmentalists are concerned about the spotted owl; which is almost extinct.
d. Many environmentalists are concerned about the spotted owl. Which is almost extinct.
e. There is no problem with this.
f. Many environmentalists are concerned about the spotted owl. which is almost extinct.