What are the common symptoms of lead exposure in drinking water?

Lead exposure in drinking water is particularly concerning due to its severe health implications, especially for vulnerable populations like children and pregnant women. The correct choice highlights the developmental issues that can arise in children, such as reduced cognitive abilities and learning difficulties due to the neurotoxic effects of lead on the developing brain. In adults, lead exposure is linked to various cardiovascular problems, including high blood pressure and an increased risk of heart disease.

These symptoms underscore the importance of monitoring and managing lead levels in drinking water to protect public health. In contrast, the other options represent symptoms that are not typically associated with lead exposure, making them less relevant in this context.