The road sign “because” in the first half of this sentence tells you that the second half will continue the thought of the first. The second half indicates that there was “no way to predict” the decision-making process’s outcome, so a description of the process as “random” makes sense. The prediction matches (A) arbitrary, meaning “determined by chance, whim, or impulse.” Choice (B) regimented, meaning “rigidly organized,” means the opposite of what the sentence requires. Choice (C) unilateral, meaning “relating to only one side,” is also incorrect—the fact that the decision making process may have been entirely in the hands of one person does not logically lead to there being “no way to predict its outcome.” The sentence compares the decision-making process to throwing dice, so a good prediction would be, “making decisions was similar to throwing dice.” The best match is (D) likened to. Choice (E) belittled by doesn’t make sense in context, and (F) dissimilar to means the opposite of what the sentence requires.