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?

Answer 1

The observation and hypothesis stage

Answer 2

Hypothesis

Step-by-step explanation:

Hypothesis is a scientific guess. Jack has a proposed an explanation based on why the magnet didn't stick to the refrigerator. His guess will be a starting point for further investigation.