Analyze the mechanisms of action, spectrum of activity, and therapeutic uses of antimicrobial agents

Analyze the mechanisms of action, spectrum of activity, and therapeutic uses of antimicrobial agents, including antibiotics, antifungals, antivirals, and antiparasitic drugs. How do microorganisms develop resistance to antimicrobial agents through genetic mutations, horizontal gene transfer, and selective pressure? Discuss strategies for combating antimicrobial resistance and preserving the efficacy of antimicrobial therapy.