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Microbiology · Virology
Sample itemWhat type of organism causes COVID-19?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Coronavirus
The key Virology principle identifies Coronavirus as the best answer because it most directly accounts for the mechanism, use, or laboratory finding described.
Option by option
A. Helminth
Helminth is inconsistent with the requested mechanism or identification.
B. Bacterium
Bacterium does not fit the stated virology relationship.
C. Coronavirus (correct)
Correct. Coronavirus matches the decisive principle in this item.
D. Protozoan
Protozoan may have another clinical role but is not supported by this clue.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.