GRE Text Completion: Maggoosh-GRE填空Maggoosh - 0GBT09CKL2Z55W80Y

A successful space shuttle launch is ____________ such a great number of factors – any of which can sabotage a lift-off – that spectators should not chafe at the slightest sign of delay. A. unrelated to B. relevant to C. contingent upon D. dependent on E. peripheral to F. coterminous with