Need help please about make inference.

From We Can Be Tarzan, Too! Written by Marvin Ferraz

While the safety features may not be as exciting as doing it Tarzan’s way, people don’t regret anything when they’re soaring through the forest canopy. For one, the scenery is very beautiful—a bird’s eye view of places you typically never see. Treetops, birds, and jungle animals move below, while the horizon slides by in the distance ahead.
Zip-lining feels dangerous, even though it’s pretty safe. That feeling of danger gives people an adrenaline rush. An adrenaline rush is the release of hormones that human's experience in an exciting situation. Zip-lining is a blast because of the sensation of flying through the air. When their feet touch solid ground again, that highly excited feeling sticks with people for a while.

Which of the following activities would also likely provide participants with an adrenaline rush? Check all that are true.
a) riding a roller coaster
b) sky diving
c) drawing a still-life
d) swordsmithing
e) fly fishing
Note: I confuse, between ,,my answer is a) and b).. or a) & b) and e) What do you think, please give opinion. Thank you