The law of variable proportions is also known as
- law of demand
-
law of diminishing returns
- law of diminishing marginal utility
- law of returns to scale
The correct answer is: B
Explanation
The law of variable proportions is also known as the law of diminishing returns. It states that, when the quantity of one factor of production is increased, while keeping all other factors constant, it will result in the decline of the marginal product of that factor.