As Dora is packing for her honeymoon to Hawaii, she realizes that all of her sunscreens have expired. Since the sun in Hawaii is so strong, she knows she wants the best sun protection possible. She calls her friend Dan, who is a dermatologist, for a recommendation. Dora is seeking information from a(n) ________ in the information search stage.

a) government source
b) internal source
c) personal source
d) marketer-dominated source
e) public source