Answer:
A. buboes
Explanation:
Buboes refers to the enlarged lymph nodes. Buboes are one of the characteristic symptoms of bubonic plague caused by Yersinia pestis.
The pathogen Yersinia pestis enters the human body by a number of methods such as the bite of an infected flea, direct contact with affected organisms, etc. The bacteria enter the blood and lymph nodes and multiply there. Presence of bacterial progeny in the lymph nodes enlarges them, that is buboes.
