Question

review the third and fourth paragraphs.
a blurry worldview
1 in school, have you ever struggled to see what
the teacher wrote on the board? maybe you
can easily read from a book, but things farther
away—like highway signs—look blurry. this
blurry distant vision is the main symptom of
myopia, a condition that affects about a third
of american adults. if you have myopia, youll
have trouble seeing things far away, but youll
be able to see nearby things clearly. this is
why myopia is commonly called
how do the third and fourth paragraphs work together?
they present a primary cause and then other potential causes.
they offer a scientific explanation and then a non - scientific one.
they explain how something works and then how it can be
improved.

Explanation:

First, analyze each option:

• Option 1: The paragraphs don't focus on causes (primary or other), so this is incorrect.
• Option 2: The text about myopia (a scientific topic) and its explanation, then likely a non - scientific (everyday - related) aspect? Wait, no, re - evaluate. Wait, the first part (third para maybe) explains myopia (scientific), and the fourth (if we assume) might offer a non - scientific angle? But actually, the correct option is the third one? Wait, no, let's re - check. Wait, the question is about how third and fourth paragraphs work together. Wait, maybe the original text's third and fourth (not fully shown here, but from the options, the third option: "They explain how something works and then how it can be improved." If the third para explains myopia (how it works: trouble seeing far, clear near), and the fourth might explain how to improve it (like glasses, etc., though not shown, but among the options, this is the most logical as the other options are incorrect. Wait, no, maybe I misread. Wait, the first option is about causes, which is not the case. The second is about scientific and non - scientific, which is not evident. The third: explain how something (myopia) works (symptoms, how it affects vision) and then how to improve it (like corrective measures). So this option fits.

Answer:

They explain how something works and then how it can be improved.