Which of the following is true of energy star-certified products? a. they cannot be salvaged for reuse. b. they exert less demand on electrical power plants. c. they have a higher carbon footprint in the environment. d. they cannot be repaired easily since they use advanced technology.

b. They exert less demand on electrical power plants

Explanation:

Energy star -certified products :

 The products which uses less energy are known as energy  certified products.These types of products are uses less energy.By using the energy star -certified products we can save energy.As we know that energy is limited that is why star rating become so important .

So the answer of the this question is b.

b. They exert less demand on electrical power plants