<u>Answer:</u>
C. Use a bike to commute to work instead of driving.
This action would help Marsha meet her goal in order to limit her impact on human-led climate change.
<u>Explanation</u>:
If Marsha wants to do her part to limit her impact on human-led climate change, she should try to avoid things which adds global warming gases to the atmosphere.
1. If she buys a new car, she is literally adding carbondioxide to the atmosphere. It will lead to the climate change. So the option A is incorrect
2. If she burns the trash instead of leaving it for city trash collection, she adds more hydrocarbons in the atmosphere which again will lead to climate change. So this option (B) is also incorrect
3. If she uses a bike instead of driving, her carbon footprint is very low and she avoids adding global warming gases to the atmosphere. Doing it, she limits the human led climate change.
4. If she buys a new Refrigerator, she is adding more fluorocarbon to the atmosphere which again will lead to climate change. So this option (D) is also incorrect.
