Correct Answer: B

Rationale: A change in bowel habits is the most common symptom of colon cancer.

Correct Answer: D

Rationale: Crohn's disease can affect any part of the gastrointestinal tract from the mouth to the anus, but it commonly affects the small intestine and colon, involving the entire thickness of the bowel wall.

Correct Answer: C

Rationale: Firm skin turgor indicates adequate hydration, which is a key goal of fluid resuscitation. Formed stools, decreased stool frequency, and relief from perianal burning are important but do not directly indicate successful fluid resuscitation.

Correct Answer: C

Rationale: Medical management of diverticulitis typically includes the administration of antibiotics to treat infection and inflammation.

Correct Answer: B

Rationale: The priority for preoperative management of a client with gastric cancer is the correction of nutritional deficits.