A treatment for bacterial infections from the early 20th century has made a comeback; the use of bacterial viruses to eliminate bacterial infections. Which explanation most accurately describes the reason for the return of this treatment? Select one:
a. Antibiotic resistance in bacteria is on the increase, so using a different kind of therapy is more beneficial.
b. Viruses can infect bacteria, transferring pathogenic genes; the viral genes can then be suppressed, causing the bacteria to not replicate viruses.
c. A wide variety of bacteria cause a large percentage of human infections, producing much sickness and death.
d. The attachment structures on the virus and the receptors on the host cells make for exquisite specificity of viruses for particular bacterial species.
