Answer:
c. curvilinear
Step-by-step explanation:
Curvilinear relationship: In statistics, the term "curvilinear relationship" is described as one of the types of relationship that exists between two different variables wherein if one variable increases then the other variable will increase as well, yet only up to a specific point, after that one variable will continuously increase and hence the other variable will decrease.
In the question above, the given statement is an example of a curvilinear relationship.