They make an effort to collect hairs, fibers, dried blood and other things that may prove _____ to the case.
A. similar B. accessible C. available D. relevant
They make an effort to collect hairs, fibers, dried blood and other things that may prove _____ to the case.
A. similar B. accessible C. available D. relevant
D
句意：他们想法收集毛发、纤维、干了的血迹和其他与案件相关的东西。他们找的那些东西都是与案件“有关的”，所以此处要用relevant。