What is the primary communication skills you will use in working with members of your project team will be?

Thanks for invitation.

Out of the given options, C-Team Building can be treated as Primary Communication skill but most appropriate could be something else also.

Ma answer is:

C. Team building 

Team Building option. Thanks.

Having a team with Superpowers is useless if they don't know how to communicate and work together.

I would consider team building (option c) as a primary objective.

In my recent positions. I involved mostly in option (A) Problem Solving