50.Which of the followings is generallydefined as the extent to which an assessment can be shown to produceoutcomeswhich are an accuratereflection of the learner’s truelevel of ability and is concernedwith the
appropriateness and meaningfulness of the inferencesmadewhenusing the testresultswithin a particularsocial or educationalcontext?
(A) Reliability. (B) Rationality. (C) Versatility. (D) Validity.