Hangman game backward #10 - guess what was the question:
fill in "t" - I'm common among human; not quite among animals.
fill in "p" - I'm related to things you dream of: car, money, summer!
fill in "f" - My population tends to increase after the first quarter.
fill in "c" - I'm what the above think they are.
Again, your answer can be in the form of:
The question was: _ p p l e
First answer that fully explained each line will be accepted, enjoy!