Question

disease - causing bacteria, such as cholera and tuberculosis, are said to be:

probiotic.

resistant.

pathogenic.

virulent.

chemotrophic.

Explanation:

The term "pathogenic" directly relates to disease - causing. "Chemotrophic" refers to an organism's energy source (chemicals). "Virulent" means highly infectious but not the general term for disease - causing. "Resistant" implies not being affected by something (like drugs). "Probiotic" are beneficial bacteria. So, the most appropriate term for disease - causing bacteria is "pathogenic".

Answer:

C. pathogenic.