Final answer:
The best example of an explanatory-response relationship is the distance between two locations and average speed during travel between the two locations.
Step-by-step explanation:
The best example of an explanatory-response relationship is option 4: Distance between two locations and average speed during travel between the two locations.In this relationship, the distance between two locations is the explanatory variable, while the average speed during travel is the response variable. The distance between two locations can influence the average speed at which one travels between them.For example, if the distance between two locations is shorter, the average speed during travel will generally be higher, since it will take less time to cover the shorter distance. On the other hand, if the distance between two locations is longer, the average speed during travel will generally be lower, as it will take more time to cover the longer distance.