You need to approach a collection question differently than a recommendation question. You have answered hundreds of collection questions, not so many recommendation questions.
When you are faced with a recommendation question, keep in mind that considering the alternatives requires a lot of thought and therefore time. The question will offer at least two very reasonable alternatives. If the question is part of a case study, you will have to search five or six pages of background looking for information.
“The tricky part of the exam was to find the BEST answer. The exam would have two similar answers and we would have to pick the best one.”
Be sure that you do not spend too much time on one of these questions. Know your time limit and flip a coin if you have to. If you can quickly narrow it down to two choices, it is often best to take a guess and spend your remaining time elsewhere.