[Solved] Which of the following microbial forms has the highest resistance to physical and chemical controls? A) Naked viruses B) Protozoan cysts C) Fungal spores D) Bacterial endospores E) Yeast Agent: An individual or entity authorized to act on behalf of another person or entity in dealings with third parties. Principal Negotiator: identifies a person who has the primary responsibility for conducting negotiations, often on behalf of an organization or government. Troubleshooter: describes someone skilled in solving problems or fixing complex issues, often in technical or organizational contexts. Commission Basis: refers to a method of payment based on a percentage of the sales one makes, as opposed to a fixed salary.