Part of taking these exam is knowing your strategy. One of the strategy is called "process of elimination".
On each question, there are probably 2 answer choices that you can immediately cross out due to either the answer choices are totally irrelevant from what the question is asking or the answer is relevant but totally wrong. After eliminating these answers, you've increased your chances of getting the correct answer. Even if you have to make a guess, you are down to three choices.