Increase in greenhouse gases since Industrial Revolution has caused which of the following environmental problem?

Global warming

The correct answer is option 2: Global warming

The increase in greenhouse gases, such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), since the Industrial Revolution has led to the trapping of heat in the Earth's atmosphere. This phenomenon, known as global warming, results in rising average temperatures on Earth, leading to various environmental and climatic changes, including melting polar ice caps, rising sea levels, changes in precipitation patterns, and more frequent and severe weather events.

Ozone depletion: while an environmental concern, it is caused by the release of specific chemicals like chlorofluorocarbons (CFCs) used in refrigerants and aerosols.
Land degradation can have various causes, including deforestation, overgrazing, and unsustainable agricultural practices.
Water contamination can arise from various sources like industrial waste, agricultural runoff, and improper sewage disposal.