Which of the following is a sign that a client is having difficulty swallowing?

Increased appetite does not indicate difficulty swallowing; rather, it suggests that a client may be eager to eat more. This could be due to various factors such as increased physical activity or metabolic changes, but it does not reflect any swallowing issues.

While occasional coughing may occur in some individuals during eating, it is not a definitive sign of swallowing difficulties. Many people cough occasionally as a reflex to clear their throat or due to minor irritants, which does not necessarily signal a problem.

Requests for textured foods may indicate personal preferences or dietary needs, but they do not directly signify swallowing difficulties. Some clients may prefer certain textures for various reasons, including taste or ease of chewing, but this alone cannot be used to assess their swallowing capabilities.