Urban areas use more energy overall than rural areas, mostly because so many more people live there. however, due to a higher level of energy efficiency in urban areas, energy use per person there is

D) similar to that in rural areas.

Explanation:

Energy use depends on several factors. The total amount of energy used is not the only factor that is important. It is also important to consider how energy efficient a place is. In general, cities have more advanced technology as well as better environmental policies. This means that urban areas tend to have a higher level of energy efficiency. Due to this factor, the energy use per person in urban areas tends to be similar to that in rural areas.

modal adverbs are used to modify specific verbs that consist of a linking verb (verb of being) and sometimes another verb. examples of modal verbs include can, could, may, might, must, shall, should, will and would.

modal auxiliary. an auxiliary verb characteristically used with other verbs to express mood, aspect, or tense. in english, the most common modal auxiliaries are can, could, may, might, must, ought, shall, should, will, and would. also called modal .

the answer should be b.

explanation:

it should be b because she researched before writing so it would be in past tense. "the author researches her subject before she had written the first draft.