Which is NOT the most likely human activity causing global climate change?

The most likely human activity causing global climate change is the burning of fossil fuels such as coal, oil, and natural gas, which release large amounts of greenhouse gases into the atmosphere. Deforestation and land-use changes are also significant contributors to climate change. However, it is important to note that climate change is a complex issue influenced by multiple factors, and it is difficult to pinpoint a single activity as the sole cause. Nonetheless, one activity that is not the most likely human activity causing global climate change is recycling. While recycling is an important environmental practice, it does not directly contribute to the emission of greenhouse gases that are primarily responsible for climate change.