Chan hee is inflating a basketball using an air pump. he notices that the pump gets warm as he uses it. what is a good hypothesis that could lead to new experimentation. a)if there is no air in the basketball, then it is hard to play the game. b)a basketball that is inflated bounces better than one that is not inflated. c)if air in a pump is squeezed more, then the air gets hotter because energy is added to it. d)basketball is more fun to play than baseball because you have to move a lot more.

A good hypothesis in the given case is that inflating basketball is getting warmer, the more it is pumped, and as a result, it would possess more heat or more friction due to all the air being pumped into the basketball at a single time.  

Hence, the correct answer is option c, that is, if air n a pump is squeezed more, then the air gets hotter as energy is supplemented to it.  

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )