Increasingly, Palaeopathologists Have Become Aware That

Increasingly, palaeopathologists have become aware that

A) human behaviour and culture play a significant role in the distribution of infectious diseases.
B) they should employ only microscopic examination techniques in their research.
C) they are primarily interested in genetically-caused diseases.
D) they should focus mainly on diseases that killed infants and children.
E) they must make conclusions about the general health of a population for their work to be credible.