Which influence is an internal influence

a) cultural background

b) likelihood of getting certain diseases

c) health knowledge

d) media messages

The correct answer will be option-B

Explanation:

Internal influence is the factors which originate from within in the humans ans the external influences are the factors which come from the outer world.

In the given question, the background, media and health knowledge are the external influences whereas the likelihood of disease is internal influence as it is caused by the internal factors and is an internal feeling.

Thus,  Option-B is the correct answer.