. What factors are responsible for the decline in freshwater worldwide?

The correct answer is: A. Overuse and pollution.<br /><br />Explanation: The decline in freshwater worldwide is primarily due to overuse and pollution. Overuse occurs when water is extracted from sources faster than they can be replenished, leading to depletion. Pollution, on the other hand, involves the contamination of water sources with harmful substances, making the water unsafe for consumption and other uses. Both factors contribute significantly to the reduction of available freshwater resources globally.