Final answer:
Yoga actually aims to increase flexibility, not reduce it, therefore the answer is B) Flexibility. It is also beneficial for reducing stress, lowering blood pressure, and enhancing concentration.
Step-by-step explanation:
Yoga is a practice that includes both physical postures and meditative techniques, and is known to provide numerous health benefits. It is well-documented that yoga can help reduce stress, improve flexibility, decrease blood pressure, and enhance concentration.
However, the correct answer to the question, 'Yoga can help reduce all of these except for', is B) Flexibility because in fact, yoga aims to increase flexibility rather than reduce it. Yoga's stretching exercises lengthen the muscles and increase the range of motion.
Additionally, its meditative elements promote relaxation and mental focus, which are linked to lower blood pressure and improved concentration.