Final answer:
The answer to the question is A. Susceptible. Antibiotic susceptibility refers to the ability of an antibiotic to inhibit the growth of a particular bacteria.
Step-by-step explanation:
The correct answer is A. Susceptible.
Antibiotic susceptibility refers to the ability of an antibiotic to inhibit the growth of a particular bacteria. When an antibiotic is considered susceptible, it means that the antibiotic is effective against the bacteria and can be used to treat infections caused by that bacteria. For example, if a bacteria is found to be susceptible to penicillin, it means that penicillin can be used to treat infections caused by that bacteria.