Question

Which of the following sentences is gram-

matically incorrect?
A. We took him to the store, the library, and
the restaurant.
B. We took him to the store and the library.
C. We took him to the store, and then we
went to the library.
D. We took him to the store and then went to
the library.

Answer 1

D. We took him to the store and then went to the library.

Step-by-step explanation:

We took him to the store, and then went to the library.

Needs a comma after store.