[Solved] The quantity that is set by the dominant firm in an oligopolistic industry: A) is based on the price set by other firms. B) is at the level where its marginal revenue and marginal cost are equal. C) is equal to the total industry output. D) ensures that there is zero economic profit in the industry. E) is equal to the output produced in a perfectly competitive industry. Culture Medium: A substance, often a gel or liquid, designed to support the growth, storage, or transport of microorganisms or cells. Colony: A distinct group of microorganisms, visible with the naked eye, on the surface of a culture medium. Mordant: A substance used in dyeing and printing that fixes the dye in the fabric, improving colorfastness; or, when used figuratively, it describes a sharply caustic or incisive expression. KOH Mount: A laboratory technique used to diagnose fungal infections, involving the application of potassium hydroxide to a sample to clear the material and make fungi more visible under a microscope.