Question

the scientists in this selection agree that the best way to prevent long - term damage to the brain is to
a stop concussions before they happen.
b change the age for body checking in hockey.
c eliminate most school athletic programs.
d require athletes to use sensors in their helmets.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: Preventing concussions before they occur would logically prevent the long - term brain damage that concussions can cause.
• Option B: Changing the age for body checking in hockey is a very specific and narrow measure related only to hockey, and not a general best way to prevent long - term brain damage.
• Option C: Eliminating most school athletic programs is an extreme and impractical solution, and it doesn't address the root cause of brain damage (concussions) in a constructive way.
• Option D: Requiring athletes to use sensors in their helmets is a monitoring measure, not a direct way to prevent long - term brain damage. It can help in detecting concussions but not in preventing the damage - causing concussions from happening.

Answer:

A. stop concussions before they happen.