Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each question.

Climate change is becoming one of the most serious global challenges in the 21st century. It is mainly caused by human activities such as burning fossil fuels, producing industrial waste, and cutting down forests. These actions release large amounts of greenhouse gases into the atmosphere, trapping heat and leading to global warming. As a result, many parts of the world are experiencing rising temperatures, extreme weather events, and melting ice in polar regions.

The effects of climate change are not only environmental but also social and economic. For example, floods and droughts can destroy crops, causing food shortages and affecting people’s lives. In addition, many animals are losing their natural habitats, which puts them in danger of extinction. However, there are several effective solutions to this problem. Governments can invest in renewable energy sources such as solar and wind power to reduce pollution. People can also make small changes in their daily lives, like saving electricity, using public transport, and reducing plastic waste. By working together, humans can slow down climate change and protect the planet for future generations.