Q: What bodily defense can be acquired in an active or passive way, and can be natural or artificial?


Read this paragraph and choose the correct option from the provided answers:

Immunity can be acquired in an active or passive way, and it can be natural or artificial. Watch this video (http://openstaxcollege. org/l/immunity) to see an animated discussion of passive and active immunity. What is an example of natural immunity acquired passively?.

 Choices:

- skin

- membrane

- nerves

- immunity


A:
immunity