Which one of the following is an example of natural climate forcing?

Correct option is B

Volcanic eruptions are a form of natural climate forcing because they can influence the Earth's climate through the release of ash particles and sulfur dioxide (SO₂) into the atmosphere. When volcanic particles and gases reach the stratosphere, they form sulfate aerosols, which reflect solar radiation, leading to temporary cooling of the Earth's surface.
Information booster:
· Greenhouse gases (GHGs) (a): Although some GHGs occur naturally, the majority of the GHG increase is due to human activities, especially CO₂ from fossil fuels, so they are generally classified as anthropogenic (human-made) forcing.
· Land use changes (c): These are primarily human-induced changes, such as deforestation and urbanization, and are considered anthropogenic climate forcing.
· Tropospheric aerosols (d): While some aerosols are natural, many are the result of human activities (e.g., pollution from vehicles and industries), so they are often considered anthropogenic.
· Natural climate forcing includes factors like volcanic eruptions and solar variability, which affect the Earth’s climate without human influence.