"TB is an often severe airborne disease caused by a bacterial infection. TB typically affects the lungs, but it also may affect many other organs of the body. It is usually treated with a regimen of several drugs taken for six months to two years, depending on the type of infection. In most cases, TB is treatable.  However, some bacteria are becoming resistant to the two most potent TB drugs. This is known as multi-drug-resistant TB (MDR TB)." https://magazine.medlineplus.gov/article/leading-antimicrobial-drug-resistant-diseases Part A. What process has led to TB bacteria becoming resistant to the most potent drug? divergent evolution speciation natural selection genetic drift Part B. Based on the answer to Part A, what inference can be made about the population of TB bacteria? The bacterial cells that contain genetic mutations to promote their survival will continue to increase in number. The bacterial cells that lack genetic mutations will continue to survive and cause diseases. Different types of bacterial cells will develop based upon the type of antibiotics they are exposed to. Selective pressures and antibiotic use will decrease the frequency of resistant strains of TB.