A client with what condition is at the highest risk for fecal impaction?

Chronic constipation is the correct choice because it directly relates to the development of fecal impaction. When a person experiences chronic constipation, the bowel movements can become infrequent and the stool can become hard and dry over time. This makes it much more difficult to pass stool, ultimately leading to a buildup in the colon. If this condition persists, it can cause fecal impaction, a serious and uncomfortable blockage that may require medical intervention.

Conditions like high blood pressure, diabetes, and asthma, while they may have various impacts on a person's overall health, do not inherently increase the risk of fecal impaction as significantly as chronic constipation does. Hence, clients with ongoing issues of constipation are those most vulnerable to experiencing fecal impaction.