Which of the following best expresses the main idea of this passage？A．There are many thing

Which of the following best expresses the main idea of this passage？

A．There are many things a homeowner can do to save energy and money.

B．Hiring an energy assessor will save energy and money.

C．Homeowners don"t know what they can do to save energy and money.

D．Replacing windows and light bulbs are well worth the effort and cost.

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