A difficult skill for a team leader to learn is knowing when to ?

A. Intervene with the team

My answer is for option (A)

the correct answer is A

regards

Thank you for the invitation. Option A, has to be intervene with Team.

Strike the right cord with the team members....and Intervene with the team

Option A. Intervene with the team looks appropriate answer

Thanks for the invite.

Knowing when to intervene with the team is difficult skill to learn . 

--------------------Thanks for the invitation. My answer is A

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My answer is A ,

........Thank you for invitation ......

Option-A intervene with the team.....................................

I strongly beleive its option A