Of int, char, float, and bool, which is smallest?

Question

The following is from a \"fill-in at home\" programming test that is part of the application process for an MSc in game development at a UK university:

C+

Answer 1

The correct answer is boolean in theory, as a char requires knowledge of at least 8 bits, while a bool technically only requires one bit. you could smash 8 bools inside of a single char if you wanted to in theory.