Question

review the sixth and seventh paragraphs.
6 myopia is becoming increasingly common, both in the u.s. and around the world. in a study published in 2008, experts found that the number of americans with myopia increased significantly from the 1970s to the early 2000s. and myopia is especially prominent among school - age children living in urban areas in some asian countries.
7 researchers are looking to see if and how myopia might be related to a persons sex, age, ethnicity, and environmental exposures—such as sunlight or the amount of time spent doing close - up work. in the past, experts thought that myopia might arise in children who spent too much time indoors reading and writing—activities that require close - up vision—or from reading in poorly lit rooms. recent studies, however, suggest that increased
how do the sixth and seventh paragraphs work together?
they both discuss what researchers have been exploring and finding about myopia.
they discuss what researchers believed in the past and then what researchers know now.
they both show that myopia is not inherited but is caused only by environmental factors.

Explanation:

Paragraph 6 presents the increasing prevalence of myopia and its prominence in certain groups. Paragraph 7 discusses researchers' exploration of factors related to myopia (past beliefs and recent studies). Together, they show what researchers have been exploring and finding about myopia. The second option is incorrect as paragraph 6 is not about past beliefs. The third option is wrong as the paragraphs don't state myopia is "only" caused by environmental factors.

Answer:

They both discuss what researchers have been exploring and finding about myopia.