6 Which choice best supports the statement made in the previous sentence?

A) NO CHANGE

B) saw a 5 percent increase in productivity

C) saved a great deal on its operational costs

D) invested large amounts of time and capital

7 In context, which choice best combines the underlined sentences?

A) Artificial lights, which lower worker productivity and are costly, typically constitute anywhere from 25 to 50 percent of a building’s energy use.

B) The cost of artificial light sources, aside from lowering worker productivity, typically constitutes anywhere from 25 to 50 percent of a building’s energy use.

C) Typically constituting 25 to 50 percent of a building’s energy use, artificial light sources lower worker productivity and are costly.

D) Aside from lowering worker productivity, artificial light sources are also costly, typically constituting anywhere from 25 to 50 percent of a building’s energy use.

8

A) DELETE the underlined portion and end the sentence with a period.

B) every year.

C) per year.

D) NO CHANGE

9

A) NO CHANGE

B) Nevertheless,

C) Alternatively,

D) Finally,

10

A) NO CHANGE

B) which are

C) they are

D) those being