I believe the answer to your question will be that it responds appropriately to the stress.
You need to get flu shot to help.
Answer: E). Both b and d
Explanation:
Operant behaviour or conditioning which is also known as Instrumental conditioning is a type of learning process in which the strength of an organism or individuals behaviour is modified by punishment or reinforcement either positively or negatively.
Operant behavior is said to be "Voluntary" because the responses of the organism are under its control.
OK Here you go
HEART
This part allows your body to pump blood from vains (sorry for spelling) also its the only part in the body to keep you alive. If your heart stops beating then you might have a heart attack. If your heart is beating very fast thats a sign that your burning cal.
Eyes
This part allows you to look at surtian objects so while walking your able to see where you are going The inside lining of the eye is covered by special light-sensing cells that are collectively called the retina. It converts light into electrical impulses. Behind the eye, your optic nerve carries these impulses to the brain. The macula is a small extra-sensitive area in the retina that gives you central vision
Hope This helped
Good Luck :D
Being social helps boost your confidence and not be shy or afraid and helps not get depressed
