Which infectious disease can be naturally transmitted from vertebrate animals to humans?

Which infectious disease can be naturally transmitted from vertebrate animals to humans?

• A. Zoonosis
• B. Homeostasis
• C. pH Meter
• D. Graduated Cylinder

Answer: (A)

Zoonosis is the term for infectious diseases that can naturally pass from vertebrate animals to humans. It describes how a disease can move from animal hosts—such as mammals, birds, reptiles, or amphibians—into people through direct contact, bites, or vectors, without artificial interference. That direct connection to natural transmission is what makes it the best fit for the question. The other terms aren’t diseases or mechanisms of transmission: homeostasis is about maintaining internal balance in the body, while a pH meter and a graduated cylinder are tools used for measuring acidity and volume, respectively, not concepts about disease transmission.

Zoonosis is the term for infectious diseases that can naturally pass from vertebrate animals to humans. It describes how a disease can move from animal hosts—such as mammals, birds, reptiles, or amphibians—into people through direct contact, bites, or vectors, without artificial interference. That direct connection to natural transmission is what makes it the best fit for the question. The other terms aren’t diseases or mechanisms of transmission: homeostasis is about maintaining internal balance in the body, while a pH meter and a graduated cylinder are tools used for measuring acidity and volume, respectively, not concepts about disease transmission.