The Gram-positive rod that is also acid-fast and is a human pathogen is A. Corynebacterium diptheria. B. Mycobacterium tuberculosis. C. Streptococcus pyogenes. D. Listeria monocytogenes.

Mycobacterium tuberculosis

Explanation:

Mycobacterium tuberculosis is a pathogenic bacteria that is responsible for causing tuberculosis. It is a gram-positive bacteria that are acid-fast because of the impermeability of several dyes. The bacteria are nonmotile and rod-shaped which can be 2-4 micrometers in length and 0.2-0.5 um in width. The bacteria is an obligate anaerobe and a facultative intracellular parasite that usually infects the macrophages.