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? (its b right ? ) a. ask questions b. construct a hypothesis c. explain the results d. make observations

Right !  His guess is a hypothesis.  It may be right, and it may be wrong.  

A hypothesis has to be TESTED by experimenting.  If you do one or two  experiments to test your hypothesis, and the results of the experiments look like they confirm/support the hypothesis, THEN you've got yourself a "theory".  

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge