The First Line of Defense Against Foreign Invaders Is ____

question 21

Multiple Choice

The first line of defense against foreign invaders is ____.

• A)adaptive immunity
• B)the immune system
• C)B and T cell activity
• D)physical and chemical barriers
• E)antibody production

---

Definitions:

Popularity

The status of being popular or widely appreciated and supported by a large number of individuals.

General Knowledge

The broad range of information across various fields that an individual acquires over time.

Grammatical Errors

Mistakes in the use of language according to the grammar rules of that language.

Regressing

Going back to a previous, often less developed or less functional, state or behavior.