Final answer:
The relaxant laxative is not a form of laxative.
Step-by-step explanation:
The answer to the question 'Which of the following is not a form of laxative?' is c. relaxant laxative.
Stimulant laxatives are substances that irritate the intestines, causing contractions and speeding up bowel movements. Osmotic laxatives work by drawing water into the intestines, softening the stool and making it easier to pass. Bulk-forming laxatives add bulk to the stool, helping it move through the intestines.
Relaxant laxatives, on the other hand, work by relaxing the muscles in the intestines, which can help relieve constipation but are not a direct form of stimulation or softening of the stool.