Which statement represents the best explanation for antibiotic resistance in some disease-causing bacteria? a. “Survival

[answerhappygod]

Which statement represents the
best explanation for antibiotic resistance in some
disease-causing bacteria?
a. “Survival of the fittest” selected for those staph
bacteria that were most fit, and when these bacteria encounter
antibiotics they were already resistant to them.
b. When the staph bacteria encounter antibiotics they gain
a resistance to them, and this resistance is inherited.
c. Natural genetic variation within the staph bacterial
population meant that some bacteria were resistant to these
antibiotics, and these bacteria survived antibiotic exposure, and
this resistance was inherited.