Extreme sports

[Vemuri]

Rules governing participation in new extreme sports fantasy camp require that applicants should be physicallay fit enough to endure the demanding activities in which they will be engaging.

A. that applicants should be physicallay fit enough to endure the demanding
B. that applicants be physicall fit enough to endure the demanding
C. applicants should have enoughphysical fitness to allow enduring te demands of
D. applicants are physically fit enough as to endure the demands of
E. physical fitness in applicants, enough for endurance of demanding

I don't have OA for this answer. Kindly answer with reasoning.

[karmayogi]

Correct idioms:

requires that X (be) Y = (be) stands for verb of being. subjunctive mood.
requires X to (be) Y = (be) stands for verb of being

Only in B the subjunctive mood is used properly.

C, D and E all are awkward and unidiomatic.

[leaonae]

even I would go with B.. uses subjunctive properly.
Karmayogi.. good explanation.. Thanks !