Which Greenhouse Effect and Global Warming term is correctly associated with major source or process: “formed by sunlight-driven reactions involving precursor pollutants”, and also with “contributes to warming near Earth's surface”?

Correct Answer: Option B — Tropospheric ozone. Tropospheric ozone is correct because it is formed by sunlight-driven reactions involving precursor pollutants. Tropospheric ozone is also associated with contributes to warming near Earth's surface. A further identifying fact is that Tropospheric ozone is contributes to warming near Earth's surface. Another useful fact is that Tropospheric ozone is associated with it should not be confused with protective stratospheric ozone. Why the other options are incorrect: Option A — Greenhouse effect: It is occurs when gases absorb and re-emit outgoing infrared radiation and is associated with keeps Earth warm enough for life. Option C — Global warming: It is driven currently mainly by human greenhouse-gas emissions and is associated with contributes to sea-level rise and changing climate extremes. Option D — Carbon sink: It is forests, soils and oceans can function as sinks and is associated with reduces the fraction of emissions remaining in the atmosphere. Exam Takeaway: Link Tropospheric ozone with “formed by sunlight-driven reactions involving precursor pollutants” and “contributes to warming near Earth's surface” for quick revision.