Which of the 4 are the most simplest form of quickly analysing an organism for a simple yes or no answer e.g oxidase test – does the organism produce cytochrome c oxidases. The test will indentify an ability but not its phylogenetic relationship to other bacteria
And the slide agglutiation test, is a specific test for the precence of specific antibodies.
(im not answering im just trying to help you get to the answer)