an increase in the length of a day a decrease in the number of volcanic eruptions a decrease in the magnitude of large earthquakes an increase in the amount of atmospheric carbon dioxide
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Human activity most likely contributes to which of the following changes on Earth?
Possibilities:
- an increase in the length of a day
- a decrease in the number of volcanic eruptions
- a decrease in the magnitude of large earthquakes
- an increase in the amount of atmospheric carbon dioxide

an increase in the amount of atmospheric carbon dioxide