You will need to add the commas as follows:
I think Robert, Mary Jane, Andrea, Lee Ann, and Milton should be on the planning committee.
There are 4 commas.
Hope this helps :)
Answer : The girls phisiccal theripast required her to use a wheelchair to get around.
- Atargatis Jones
The answer is...This is a simple sentence because it contains a complete thought
So, number 2.(Which doesn’t have O)