hydrogen, helium, and water vapor hydrogen, methane, and ozone carbon dioxide, water vapor, and nitrogen carbon dioxide, methane, and helium
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?
Possibilities:
- hydrogen, helium, and water vapor
- hydrogen, methane, and ozone
- carbon dioxide, water vapor, and nitrogen
- carbon dioxide, methane, and helium

carbon dioxide, water vapor, and nitrogen