If you are writing a business letter to someone you know well,it is acceptable to use his or her first name in the salutation.

Toby is the most experienced architect at a construction firm, and a new client approaches him to build a gallery. Toby had previously helped this client design and build a museum, so the firm assembles a team to work under his leadership. Which type of power does Toby possess?

A) Expert
B) Coercive
C) Referent
D) Reward