Answer:
b. an inverse relationship between group size and individual motivation
Step-by-step explanation:
In psychology, the term social loafing refers to the phenomenon that occurs when a person exerts less effort when he/she is being part of a group than when he/she works alone. This phenomenon also states that the bigger the groups the less effort the members of the group put into achieving the goals of the group.
Therefore, we can say that b. there is an inverse relationship between the groups size and individual motivation, since the BIGGER the group, the LESS motivation members of the group have.