Final answer:
The correct answer is VRE (Vancomycin-Resistant Enterococcus). VRE refers to Enterococcus species that have developed resistance to the antibiotic vancomycin. The resistance mechanism in VRE involves a structural change to the peptidoglycan subunits, preventing vancomycin from binding.
Step-by-step explanation:
The correct answer is A) VRE (Vancomycin-Resistant Enterococcus). Vancomycin-resistant enterococcus (VRE) refers to Enterococcus species that have developed resistance to the antibiotic vancomycin. VRE is a significant concern in healthcare settings as it is often spread between patients and can cause serious infections. The resistance mechanism in VRE involves a structural change to the peptidoglycan subunits, preventing vancomycin from binding.