42. A cause of constipation can be:

Answer: C

Explanation:

Certain medications can cause constipation.

Certain medications are known to lead to constipation as a side effect by slowing down gut motility or altering the balance of fluids in the intestines.

A) Increased fluid intake

Increased fluid intake is generally recommended to alleviate constipation, as it helps to soften stool and promote regular bowel movements. Therefore, this option would not be a cause of constipation.

B) High fiber diet

A high fiber diet is typically associated with preventing constipation rather than causing it. Fiber adds bulk to the stool and promotes movement through the digestive tract, which makes this option incorrect.

C) Certain medications

Certain medications, including opioids, antacids containing aluminum, and some antidepressants, can cause constipation by affecting intestinal motility. This makes this option a valid cause of constipation.

D) Increased activity

Increased physical activity is often recommended to help alleviate constipation, as it stimulates bowel movements. Hence, this option does not contribute to causing constipation.

Conclusion

The identification of certain medications as a cause of constipation is accurate, as they can interfere with normal digestive processes. In contrast, increased fluid intake, a high fiber diet, and increased activity are all strategies that help prevent constipation, clearly indicating that they cannot be causes. Thus, option C stands out as the correct answer.