Which of the following individuals would most likely not be considered a group’s gatekeeper? jim, who is informally regarded as the group’s leader gary, who is always willing to express the group’s values karl, who carry out the group’s activities juan, who is a “member in good standing”

The answer of the question presented above is letter C) Karl, who helps carry out the group’s activities. 
The choices are: 
A) Jim, who is informally regarded as the group’s leader
B) Gary, who is always willing to express the group’s values
C) Karl, who helps carry out the group’s activities
D) Juan, who is a “member in good standing”

Where are the following