The art in scientific thinking is a. finding the right problem to study. b. deciding which assumptions to make. c. the ability to make an abstract subject easy to understand. d. not something in which economists have to be skilled.

b. deciding which assumptions to make.

Explanation:

The scientific thinking involves finding of reasons for the cause of natural events or process that occurs naturally. The art of scientific thinking is associated with the curiosity of the researchers as well as the ability to frame the assumptions based on the direct observation of the event or process. This assumption then can be tested using the experimental trials.    

d

Explanation: trying to decide what assumption to make

sea breeze

explanation:

cool air is going towards land allowing for the land to be cooler, the hotter air gets pushed away from the land.