Please help me not sure about this one.

The following phrases are bullet points in a letter. Which one is not in parallel form.

1. Increase sales support staff
2. Don't forget marketing plan
3. Run market test with Group A
4. Decrease overhead
I picked #4

3 answers

Each one of these (except one) starts with a verb -- a verb in command form and without a negative. Which one is the exception? (It's not #4.)

??
I think # 2
#2 is right! Yes!!

=)