Answer:
When the propagation of an infectious disease gets reduced, people stop getting their children or themselves getting vaccinated for the infectious disease.
But what we forget is somebody out there might be an asymptomatic carrier of the disease and can spread the disease. As a result, if many people are not vaccinated for the particular disease, then there might be an outbreak of the infectious disease again and it can be deadly.
A tumor that spreads from its original location to another location is called a malignant.
A malignant tumor is capable of infecting neighboring tissues and can possibly infect tissues that are pretty distant. It's growth is not limited either.
B white blood cells are found in the lymph
C. is the answer.
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