Hey can someone please help me with this economics question?

The link to the textbook is: https://www.core-econ.org/project/core-the-economy/

Recall one of your or others' experiences related to the group assignment (school or university) where it was difficult to ensure that every member exerts their best possible effort. Discuss why it was difcult. Your discussion must refer to i) Figure 4.7 from Unit 4 of the textbook (see below) and ii) use the terminology related to the game theory. 30 I Kim's payoff it she contributes _ I Kim's payoff If she does not contnbute Kim's payoff (S) 0 1 2 3 Number of other farmers contributing Figure 4.7 Kim's payoffs in the public goods game