human
Question: Four identical candles are set on a safe surface and lit. One is covered with a small-sized jar, one is covered with a large-sized jar, and one candle is left in the open. A fourth lit candle is placed in a vacuum. Which candle will most likely stay lit the longest?

Choices:
A) the candle placed in the vacuum
B) the candle covered with the small-sized jar
C) the candle covered with the large-sized jar
D) the candle left out in the open
gpt
The correct answer is 3: the candle left out in the open.