Which is the best definition of a risk factor? the combination of quality of life and life expectancy the average rate of hospital births within a country a behavior or condition that might lead to disease or injury a hereditary disease that a person is likely to develop later in life

a behavior or condition that might lead to disease or injury.

Explanation:

From the choices listed in the question, the best definition of a risk factor would be a behavior or condition that might lead to disease or injury. This is because the formal definition is anything that increases an individual's chances of developing a disease or injury. An example of this would be excessive alcohol consumption which drastically increases the chances of liver failure and/or death from intoxication.

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