This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Reading comprehension: main idea
Prompt focus: Read the passage. Handwashing remains the single most effective measure for preventing the spread of infection in healthcare settings. Despite the availability of advanced technologies, studies repeatedly show that consistent hand hygiene by staff reduces healthcare-associated infections more than any other single…
Why the correct answer works
Handwashing is the most effective single way to prevent the spread of infection
The passage explicitly identifies handwashing as the most effective single infection-prevention measure.
Why the tempting wrong answer fails
Incorrect. The passage explains infections can be reduced, not that they cannot be prevented.
Plain-language takeaway
The passage states directly that handwashing is the single most effective measure and that studies confirm it reduces infections more than any other single intervention.
Simple analogy
Think of reading comprehension: main idea like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.