Select the most appropriate option to fill in the blank.
Asanas, or yoga postures, primarily serve as a lubrication practice for the body's joints, muscles, ligaments, and other parts, _________ circulation and flexibility.

Correct option is D

The correct option to fill in the blank is (d) "boosting."
Boosting means to help or encourage something to increase or improve, fitting perfectly in the context of how yoga benefits circulation and flexibility. ( बढ़ाना)
Example: Regular exercise is known for boosting immune system function.
Other options are incorrect:
· Abating and dwindling imply a reduction, contrary to the context of enhancement.
· Retrenching refers to reducing costs or spending, not relevant here.
· Dwindling: Gradually decreasing in size, amount, or strength.