"a sport that is very dangerous and exciting, for example, skydiving and bungee jumping" (Cambridge Dictionary)

"a competitive (comparison or self-evaluative) activity within which the participant is subjected to natural or unusual physical and mental challenges such as speed, height, depth or natural forces and where fast and accurate cognitive perceptual processing may be required for a successful outcome"
https://www.mdx.ac.uk/our-research/research-profiles/research-case-studies/case-studies/science-of-sport

• What examples of extreme sports are in the reading assignment?

1. hang gliding, free climbing (1st paragraph)
2. jumping off a mountaintop wearing only a wingsuit (3rd paragraph)
3. riding down a rushing river in a tiny kayak (3rd paragraph)
4. mountain biking, snowboarding (5th paragraph)

• Why are people in favor of the extreme sports?

"They...fill us with admiration for what human beings can accomplish." (1st paragraph)

"[W]hen other people see that courage, they gain more confidence in their own abilities." (3rd paragraph)

"Courage can give us the strength to make our dreams come true." 
(5th paragraph)

• What does the author in favor of extreme sports think about the risk?

"...[A]ll sports are dangerous to some extent." (4th paragraph)

• How does the author not in favor of the sports describe them?

"most senseless and dangerous activity imaginable." (1st paragraph)

• What kind of dangerous cases does an author show?

They don't consider either their own safety or the safety of others. 
(3rd paragraph)

They are more interested in showing off than anything else.
(3rd paragraph)

• What kind of dangerous cases does the author not in favor of the sports show?

BASE jumper might land on a hiker or someone standing on the street. (4th paragraph)

A jet skier might hit a swimmer in the ocean. (4th paragraph)

• What does an author suggest to prevent accidents caused by extreme sports?

It is important to regulate extreme sports by enforcing age restrictions and limiting the places where such activities are permitted. (4th paragraph)

• What examples of extreme sports are in the reading assignment?

• Why are people in favor of the extreme sports?

• What does the author in favor of extreme sports think about the risk?

• How does the author not in favor of the sports describe them?

• What does the author not in favor of extreme sports think about the people in the activity?

• What kind of dangerous cases does an author show?

• What does an author suggest to prevent accidents caused by extreme sports?