C the endospore stain. D the flagella stain. B can help determine whether a bacterium has a capsule. C is conducted using methylene blue or some other basic dye. D is used only on viruses during electron microscopy.
B identify different components within a single cell.
C Both A and B are correct. Neither A nor B are correct. B it is quick and cost-effective to run. C it shows flagella in addition to endospores. D it distinguishes between endospores and granules or vacuoles.