Item — sat-dog

Medium Reading and Writing · Standard English Conventions · None · MCQ

A large study recently revealed that those individuals who frequently engage in physical activity report a higher quality of life than those who do not. The study’s findings have led researchers to believe that physical activity may have a positive effect on quality of life.

Which choice best combines the sentences at the underlined portion so that it conforms to the conventions of Standard English?

A
The study’s findings have led researchers to believe that physical activity may have a positive effect on quality of life.
B
The study’s findings have led researchers to believe: physical activity may have a positive effect on quality of life.
C
The study’s findings have led researchers to believe that physical activity may have a positive effect; on quality of life.
D
The study’s findings have led researchers to believe that physical activity may have a positive effect, on quality of life.

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