If it were not for these two men, we might not have come to understand microorganisms. these men are named

Robert Hooke and Antoni van Leeuwenhoek.

Explanation:

Antoni van Leeuwenhoek, along with Robert Hook, was the first person to observe microorganisms. He used a microscope, which he made by himself. Before Van Leeuwenhoek's discovery, it was rather strange how grapes could be turned into wine and milk into cheese. He didn't really make a connection between these processes, but he used a microscope and he established that the forms of life, which can't be seen by an eye, exist.

when trichomoniasis does cause symptoms, they can range from mild irritation to severe inflammation. itching or irritation inside the penis; burning after urination or ejaculation; discharge from the penis.

the answer is d

c- dynamic stretching