Question

Jack tries to place magnets on the door of his refrigerator. He observes that the magnets don’t stick. He guesses that the door of the refrigerator is made of a nonmagnetic substance. What stage of scientific investigation does his guess represent? ask questions construct a hypothesis explain the results make observations

Answer 1

Construct an hypothesis

Step-by-step explanation:

Answer 2

Construct an hypothesis (Because the magnet wasn't attracted to the door, the door must be non-magnetic.) He has already made an observation (the magnent didn't stick), and already asked a question (Why didn't the magnent stick). However, he has not explained the results (there is no experiment yet).