Answer:
B. Environmental factors can determine if a genetic trait becomes a health issue
Step-by-step explanation:
Genetic traits are the representation of genetic codes (our DNA). It is like a very big library which contains lots of information, some more available,some less available. The environment we where born and we live in, can determine if the information of this library, the genetic codes, are represented in traits.
For example, if there is someone who has one or several familiars who have suffer of Diabetes, this person will tend to have the same condition, depending a lot on his or her habits. If this person does not take care of him or her self with what he or she eats and has a sedentary life (environmental factors), the person will be more likely to have diabetes.