Question

streptococci diplobacilli staphylococci monobacillus

Explanation:

Streptococci are spherical bacteria that form chains. Diplobacilli are rod - shaped bacteria in pairs. Staphylococci are spherical bacteria that form grape - like clusters. Monobacillus is a single rod - shaped bacterium. The bacteria in the image are in grape - like clusters, which is characteristic of staphylococci.

Answer:

C. staphylococci