Study the given experiment and answer the following:
A science teacher placed two identical candles on separate petri dishes and lit both of them. One candle was left open, while the other candle was covered carefully with a glass tumbler. After observing for some time, the uncovered candle continued to burn normally. However, the candle covered with the glass tumbler slowly became dim and finally went out.
The teacher asked the students to observe carefully and explain why the covered candle stopped burning while the uncovered candle continued to burn.
The teacher asked the students to observe carefully and explain why the covered candle stopped burning while the uncovered candle continued to burn.
Which of the following best explains why the flame became dim before going out?