When getting a vaccination which substance is injected in your body 1. Bacteria to combat a pathogen 2. White blood cells to engulf of a pathogen 3. A weekend form of a virus 4. Antibiotics to kill a virus

3

Explanation:

Vaccines contain a weakened form of the virus so that your body learns how to kill it. If you were to ever get the "real" virus, your body is able to recognize the virus and remember how to kill it much faster than if it was exposed to it for the first time.

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.

b

is correct hope this   also i learnd this in middle school