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A colon should follow a complete independent clause and introduce an explanation, list, or example. Option B uses a full clause (“The nurse restocked the following”) and then the colon to introduce the list—correct. A places a colon after a verb directly followed by objects, which many style guides discourage (“restocked:” isn’t a complete stand-alone statement). C misuses a comma before the colon and interrupts the clause. D lacks the colon and instead creates an appositive list; while not always wrong, it doesn’t match the prompt’s requirement to use a colon and also risks a comma splice feel. TEAS tip: If you can put a period where the colon sits and still have a complete sentence, the colon placement is likely valid (“The nurse restocked the following.”). Colons can also precede a single item that restates or explains (“There is one goal: safety.”), but avoid inserting them after to be or prepositions unless the preceding words form a complete clause.