I need the answer plz

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?

50 points! 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.