Answer: a. Direct b. Inverse c. Inverse d. Inverse
Explanation: Let's remember what a direct and inverse relationship is.
A direct relationship is when both increases or decreases at the same time. For example in the option a. If the winning percentage of the team goes higher (Increases) you would expect that more (Increases) people goes to see them.
In the other hand, a inverse relationship is when if one increases, the other one decreases l. For example in the option b. If the temperatures go higher (Increases) then you wouldn't expect people wearing or buying sweaters, so the sales of sweaters will go down (Decreases).
You can see it in the same way for the other two options:
c. As the income of a person goes higher(Increases), that person would have the need to go to discount stores so it's visits will be less often (Decreases).
d. As higher (Increases) the prices of gasoline, less gasoline the people can buy and less (Decreases) they can drive.