Question

which of the following is an inference?
a burning candle is extinguished when it is covered with a jar.
the candle burns longer than expected in a jar that has a plant in it.
a plant lives longer than expected in a jar that has a burning candle.
there is more oxygen in the jar because there is a plant in it.

Explanation:

An inference is a conclusion drawn from evidence and reasoning. The first three options are observations (what is directly seen or measured). The last option “There is more oxygen in the jar because there is a plant in it” is an inference. It is a conclusion (more oxygen) based on the presence of a plant (evidence) and the knowledge of plant - oxygen production (reasoning).

Answer:

There is more oxygen in the jar because there is a plant in it.