Question

choose the best transitions to complete the passage. football is an important part of the high school experience in many towns around the nation. studies show, that helmets do not provide enough protection for the brain. some players can end u age. a blow to the head causes a concussion, which means that the brain hits the skull. schools should consider whether the game is worth the risk. however for example therefore

Explanation:

1. "However" is used to show a contrast. The first sentence says football is important, and then studies show helmets don't protect the brain well - a contrast.
2. "For example" is used to give an illustration. A concussion (brain hitting skull) is an example of the damage.
3. "Therefore" is used to show a conclusion. Since there is damage (from concussions), schools should consider the risk - a conclusion.

Answer:

1. However
2. For example
3. Therefore