Correct answer only !

question 6 (3.5 points)

the following sentence may contain a grammar or usage error. parts of the sentence are underlined. choose the underlined part of the sentence that contains an error. if there is no error in the sentence, choose "no error."

it's rather ironic that these streets, all of which are named after trees, are actually not tree-lined.
question 6 options:

a. streets, all

b. not tree-lined.

c. trees, are

d. no error

e. it's rather