​Authors of Recent (2011) Studies Have Concluded Which of These

Multiple Choice

​Authors of recent (2011) studies have concluded which of these about the effects of physical activity on risk of all-cause mortality?

A) ​Some activity is far better than none, but more is no better than some.
B) ​Some activity is much better than none, and more is better than some.
C) ​More activity is better than none, but some is not any better than none.
D) ​No activity is better than a little, and some is greatly better than more.