[Solved] The presence of nonbudding, thick-walled spherules, 20 to 200 µm in diameter, containing either granular material or numerous small, nonbudding endospores, usually indicates infection with A)Coccidioides immitis. B)Blastomyces dermatitidis. C)Histoplasma capsulatum. D)Paracoccidioides brasiliensis. Sea Level: The average height of the ocean's surface between high and low tide, used as a reference point for measuring elevation or depth. Calcium Carbonate: A chemical compound with the formula CaCO3, found in rocks such as limestone, chalk, and marble, and is the main component of shells of marine organisms. Chalk Formation: A type of limestone characterized by its fine, white, porous structure, formed from the accumulation of microorganisms' calcite shells. Microscopic Organisms: Tiny life forms, not visible to the naked eye, including bacteria, protozoa, and certain types of fungi and algae.