Answer:
The correct option would be B
Step-by-step explanation:
The sentence is stating that needles should be clean and without germs before applying the needles, it is the only logical answer. According to the dictionary disenfectant is a chemical liquid that destroys bacteria.
B. A substance that kills germs
The prefix dis- means away, or in this case, kills. An infectant is something that is infected, with germs, you can say.
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