The table shows the total product produced from adding incremental units of a variable input to a production process. As three units of input are added, the marginal product is 32 - 20 = 12 units of output. Beyond three units, each additional unit of input produces diminishing marginal returns with the marginal product decreasing as more input is added.

1. The question is based on the following table, which provides information on the production of a
product that requires one variable input.
With the addition of the third unit of input, the marginal product is
Input Total Product
0 0
1 5
2 20
3 32
4 42
5 50
6 55
7 58
8 58
9 56