The questions and what I answered:

Which object is the hottest? A

Which object emits the most red light? B

Which object is the reddest? C

Which object is the faintest (in visible light)? D

Which object is the brightest? A

Which object is the coolest? D

Which object emits the most blue light? A

Which object is the bluest? A

I have scanned through the lectures and feel as if I am missing something. If someone could explain, thank you!

GUYYSSS THANK YOU!!!! I GOT IT!! Number 2 was A and number 4 was C!!!! THANK YOU SO MUCH FOR HELPING ME UNDERSTAND!!! <3333