Assertion (A): Purgatives containing magnesium salts are commonly utilized.
Reason (R): The presence of magnesium salts in the intestinal lumen leads to an increase in the concentration, fluidity and volume of the intestinal contents.
A is true, and R is true, providing a valid explanation for A.
A is true, and R is true, but R does not explain A.
A is false, and R is true.
A is true, and R is false.
Purgatives refer to substances or medications that are used to induce bowel movements and relieve constipation. They are also commonly known as laxatives. Purgatives help to promote the elimination of fecal matter from the intestines by increasing the movement and fluidity of the intestinal contents.
In this question, Option 1 explains that both Assertion (A) and Reason (R) are true, and Reason (R) provides a valid explanation for Assertion (A). In this case, the assertion states that purgatives containing magnesium salts are commonly utilized, which is true. The reason explains that the presence of magnesium salts in the intestinal lumen leads to an increase in the concentration, fluidity, and volume of the intestinal contents, which is also true and provides a valid explanation for why such purgatives are used. Therefore, Option 1 is the correct answer.