The most conclusive evidence that viruses cause cancers is provided by the following:
A) the presence of oncogenes in humans
B) the presence of antibodies against viruses in cancer patients
C) treating cancer patients with antibiotics
D) development of a cancer following an injection of viruses

Question

Quizplus · Accepted Answer

The development of a cancer following an injection of viruses provides the most conclusive evidence that viruses cause cancers. This is known as the Koch's postulates, which is a set of guidelines used to establish the causative agent of an infectious disease.

The Most Conclusive Evidence That Viruses Cause Cancers Is Provided