Question

(1) running in water, also known as aquajogging, may look ridiculous, but it is worth any and all embarrassment. (2) this type of exercise can increase a runners speed. (3) running in water creates a substantial amount of friction, which benefits muscle development. (4) aquajogging is also a no - impact exercise. (5) water massages muscles with every movement as well. (6) as a result, aquajogging increases circulation and promotes relaxation. (7) aquajogging is also a great way to stay cool during the dog days of summer. (8) water activities help remove metabolic waste, improve cardiac function, lower blood pressure, and encourage healing. (9) aquajogging is good for runners with a myriad of conditions. (10) people with stress fractures, bunions, shin splints, arthritis, bum knees, and other physical problems can easily run in water. (11) this exercise is also good for pregnant women. (12) as the fetus grows, the gravitational pull on land increases and causes pregnant women to strain their back and joints. (13) in water, a person supports only half of his or her weight, which is a huge gravitational relief. (14) this exercise eliminates impact, and this is especially helpful for expectant women who are not used to carrying a babys weight. (15) aquajogging will keep the body temperatures for mother and fetus normal. (16) less gravitational pull, less impact, and normal temperature make water running ideal for the overweight as well. (17) it does not take much time at all to learn how to aquajog. (18) with your head above water, jog in place until you get used to it. (19) make the same motions you would if you were jogging on land. (20) then, jog around the pool. (21) you may require a floatation. which sentence would best support juans argument? a. floatation belts and vests are rather expensive, however. b. marathon champs and other professional runners also run in water. c. some athletes complain that running in water is too monotonous. d. stress fractures are fractures caused by repetitive motion.

Explanation:

The passage promotes aquajogging as a beneficial exercise. Option B shows that professional runners, who are likely to be well - informed about effective training methods, also run in water. This adds credibility to the argument that aquajogging is a good exercise. Option A mentions a negative aspect (cost of floatation devices), Option C presents a complaint about the exercise, and Option D is just a definition of stress fractures not directly supporting the argument for aquajogging.

Answer:

B. Marathon champs and other professional runners also run in water.