Problem: Select the reason why increased dietary fiber is a major component in the management of constipation. Looking for Course Help? Select one: O a. Fiber increases stool bulk and fluid content and decreases transit time, resulting in an increase in the frequency of defecation. O b. Fiber affects the fluid and electrolyte supplements in the stomach and inhibits the sympathetic nervous system, resulting in an increase in the frequency of defecation. O c. Fiber decreases the number of microorganisms in the gastrointestinal (GI) tract, decreases the fluid content, and decreases transit time