Which of the following planets has maximum CO₂ concentration (by volume) in its atmosphere composition?

Correct option is C

Explanation:
Venus has an atmosphere composed of about 96.5% carbon dioxide (CO₂), making it the planet with the highest concentration of CO₂ in its atmosphere. This dense CO₂-rich atmosphere is responsible for Venus’s intense greenhouse effect and extremely high surface temperatures.
Information Booster:
· Earth has approximately 0.04% CO₂ in its atmosphere.
· Mercury has a very thin exosphere and negligible CO₂.
· Jupiter is a gas giant with an atmosphere mostly composed of hydrogen and helium, not CO₂.
· Venus’s thick CO₂ atmosphere contributes to surface temperatures hot enough to melt lead (~464°C), despite being second from the Sun.