Which method can be used to reduce methane emissions?

Reducing livestock farming is effective in minimizing methane emissions because livestock, particularly cows and sheep, produce significant amounts of methane during digestion, a process known as enteric fermentation. Methane is a potent greenhouse gas, contributing to climate change impacts. By reducing the number of livestock or improving farming practices related to livestock, such as dietary adjustments or manure management, methane emissions can be significantly lowered.

The other options either do not directly relate to methane production, or they may even exacerbate the situation. For instance, increasing deforestation can actually increase carbon emissions and negatively impact the environment. Improving industrial waste management is beneficial for overall waste reduction but doesn't specifically target methane emissions. Enhancing fossil fuel extraction may lead to increased methane release, particularly from gas leaks during extraction processes.