What does it mean to have a predisposition for a particular trait or disease?

Having a predisposition for a particular trait or disease means that an individual has an increased likelihood of developing that trait or disease compared to others who do not have the same predisposition. This concept often relates to genetic factors that can make a person more susceptible to certain conditions. For instance, if someone has a family history of a specific illness, they may carry genetic markers that elevate their risk of developing that illness.

While predisposition can indicate a higher probability of occurrence, it does not guarantee that the individual will definitely develop the trait or disease, as other factors including environmental influences and lifestyle choices can play significant roles as well. This stands in contrast to the other options, which either suggest immunity, a lower likelihood, or disregard the impact of the surrounding environment, none of which accurately reflect the meaning of predisposition.