📊 Biology
Q. Which factor decreases blood pressure?
  • (A) Obesity
  • (B) High salt intake
  • (C) Dehydration
  • (D) Regular exercise
✅ Correct Answer: (D) Regular exercise

Explanation: Exercise improves heart efficiency and helps lower blood pressure.

Explanation by: Roshan
Exercise improves heart efficiency and helps lower blood pressure.

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