Question: Which of these is the most likely to result in a trip to the hospital?
Choices:
text: a flashback explosion inside a container
label: A
text: watching a television drama about heart attacks
label: B
text: filling a bucket of water with a hose
label: C
text: eating waffles that are just the right temperature
label: D
Answer: A
Fact: when a gas in an open container evaporates, that gas spreads out into the air