Which of the following is a sign of a swallowing problem?

Drooling is a significant sign of a swallowing problem, commonly known as dysphagia. When a person has difficulty swallowing, they may not be able to effectively manage saliva or food in their mouth, leading to excess saliva that can result in drooling. This symptom often indicates that the body's normal swallowing reflexes are compromised, which can happen due to various medical conditions such as neurological disorders, muscle weakness, or obstructions affecting the swallowing pathway.

The other options, while they may suggest different eating behaviors, do not specifically signal a swallowing problem. Eating quickly can be related to various habits rather than physiological difficulties. Talking while eating is generally a behavior that may lead to choking but is not indicative of a swallowing issue itself. Consuming solid foods only could be a choice based on personal preference or dietary restrictions but does not reflect an underlying swallowing dysfunction. In contrast, drooling is directly associated with the inability to swallow effectively, making it the correct indication of a swallowing problem.