For controlling which one of the following are roots of Rauvolfia serpentina used?

✅Explanation:
-Rauvolfia serpentina, also known as Indian snakeroot or sarpagandha, is a medicinal plant with a long history of use in traditional medicine.
-Its roots contain alkaloids, notably reserpine, which has been used for centuries to treat various ailments.
-Reserpine acts by depleting neurotransmitters like norepinephrine and serotonin, which leads to a decrease in blood pressure and heart rate. Hence, it has been used in modern medicine to treat hypertension (high blood pressure).