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The fastest way to plateau on MCQ practice is skipping the "why" once you've gotten one right.
It's tempting to click through multiple-choice practice quickly once you're getting most of them right — see the green checkmark, move to the next question. This is where a lot of study time gets wasted.
Getting a question right doesn't mean you understood why the other three answers were wrong, and on a real exam, distractors are specifically written to trap the kind of half-understanding that still lands you on the correct choice in practice. A rationale that explains why each wrong answer is wrong — not just why the right one is right — is doing more teaching than the question itself.
This matters even more when you get a question right for the wrong reason: a lucky guess, a process of elimination that happened to work, a rule you misremembered in a way that coincidentally gave the right answer this one time. Reading the full rationale on every question, correct or not, is slower in the moment and faster over the course of a study plan.
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