A good reason for Canadians to have central heating systems is

Question

Select one:
a. to stop water pipes from freezing in winter.
b. to use large amounts of energy in winter.
c. to help passive solar heating.
d. to cool houses in summer.

Answer 1

I am not sure what answer is correct. Please help me.

Answer 2

a) and d) are both correct : )
PS... I live in CANADA

Answer 3

Thank you so much Ms Pi! I don't think d is correct because why would we want to spend lots of energy? We want to use less, right?