Which statement describes a variable expense?

Question

a. Chrystal pays $120 each month for access to high-speed internet at her house

b. Gemma’s mortgage payment is exactly $784.56 every month.

c. John makes an $89 payment each month on his new mobile phone

d. Mia’s electricity bill total depends on how much electricity she uses each month.

Answer 1

d. Mia’s electricity bill total depends on how much electricity she uses each month.