Answer choice B is correct. B corrects the clunky use of passive voice in A repeated in several of the other answer choices. B also correctly places "to the body and to the mind" after "renewed vitality and improved performance."
As of this writing, pressing the OA button reveals a typo: The answer is not E, as explained below.
See explanations for each answer choice below:
A plethora of studies by physicians, psychologists and exercise physiologists confirm that
renewed vitality and improved performance are afforded by recreation to the body and to the mind.
(A)
renewed vitality and improved performance are afforded by recreation to the body and to the mindAnswer choice A is incorrect because the placement of "to the body and to the mind" suggests that the recreation is occurring to the body and mind; however, the intended meaning of the sentence is that recreation brings renewed vitality and improved performance to the body and mind.
(B)
recreation affords renewed vitality and improved performance to the body and to the mindAnswer choice B is correct.
(C)
there are afforded renewed vitality and improved performance to the body and to the mindAnswer choice C is incorrect because it removes the subject "recreation," changing the meaning of the sentence. C also employs the passive construction when the active construction would be clearer.
(D)
by recreation the body and mind are afforded renewed vitality and improved performanceAnswer choice D is incorrect because of the less preferred passive construction. D also uses an incorrect preposition "by" (compared to correct "through") to refer to how recreation affects the body and mind.
(E)
the body and the mind afford renewed vitality and improved performance to themselves by recreationAnswer choice E is incorrect because it incorrectly changes the subject of verb "afford" to "the body and mind," suggesting that the body and mind can be reflexive actors in improving their vitality and performance ("to themselves").