501 Critical Reading Questions

c
) is not 
positive enough.
176.
c.
Nowhere in the passage does the author speculate about whether
teenagers can change their exercise habits.
177.
c.
One meaning of 
sedentary
is settled; another meaning is doing or
requiring much sitting. 
Stationary,
defined as fixed in a course or
mode, is closest in meaning.
178.
e.
The last sentence illustrates factors that motivate teenagers to
exercise by using the results of a national survey to provide spe-
cific examples.
179.
d.
The passage promotes change in teenagers’ exercise habits by
emphasizing the benefits of exercise, the moderate amount of
exercise needed to achieve benefits, and some factors that may
encourage teenagers to exercise.
180.
c.
The focus of the passage is Blackwell’s efforts to open the profes-
sion of medicine to women. Lines 3–4 state that Blackwell 
sup-
ported women’s medical education and helped many other women’s
careers.
181.
a.
In this context, the word 
practical
refers to the solution’s utility as
opposed to its theoretical or ideal premise.
182.