Which sentence contains a comma that is correctly placed but unnecessary?

Question

(1 point)
Responses

I wanted to sleep late, but it was a school day.
I wanted to sleep late, but it was a school day.

However, it wasn’t worth the effort.
However, it wasn’t worth the effort.

We hopped, skipped and jumped in gym class today.
We hopped, skipped and jumped in gym class today.

Last week, we drove through Nebraska, Iowa, and South Dakota.

Answer 1

Last week, we drove through Nebraska, Iowa, and South Dakota.