The correct option is C Plasmid
Antibiotic resistance is a form of drug resistance where bacteria are able to survive after exposure to one or more antibiotics. Many antibiotic resistance genes reside on transmissible plasmids, facilitating their transfer. A gene for antibiotic resistance may readily spread through an ecosystem of bacteria. Once, a bacterium becomes resistant to an antibiotic, it is unable to return to its previous state of vulnerability. Resistance will be passed on to all of the daughter cells of the resistant microbe. Antibiotic-resistance plasmids frequently contain genes conferring resistance to several different antibiotics. Thus, the correct answer is option C.