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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
A.unrelated to
B.relevant to
C.contingent upon
D.dependent on
E.peripheral to
F.coterminous with
