Proteins are involved in all of the following roles in the body, but do not:
a. act as regulators of fluid balance.
b. form antibodies.
c. form part of cholesterol's structure.
d. act as transporters.
e. participate in cell growth and repair.

i do not know the answer

Explanation:

wassup

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.