A. the pneumonic plague, not the bubonic plague.B. both the pneumonic plague and the bubonic plague.C. caused by fleas on cats and dogs.C. caused by fleas on rats and vermin.
Answer: b, both the pneumonic plague and the bubonic plague.
Explanation: the other answer on here is wrong lol. i did this one and got it right. dont trust that other guy and also the bubonic plague wouldve been mentioned for a reason.