Question

which influence is internal?
○ likelihood of getting certain diseases
○ cultural background
○ media messages
○ health knowledge

Explanation:

To determine the internal influence, we analyze each option:

• "likelihood of getting certain diseases" can be influenced by genetic or external factors (e.g., environment), but the likelihood itself is not an internal influence in the sense of a personal factor one controls or has as part of their internal knowledge/attributes.
• "cultural background" is an external, societal influence.
• "media messages" are external sources of information.
• "health knowledge" is what an individual knows about health, which is an internal factor (part of one's knowledge base, personal understanding).

Answer:

D. health knowledge