J. W., at age 5 months, had a moist, erythematous rash on the cheeks, chest, and extensor surfaces of the arms, caused by atopic dermatitis. She had a secondary bacterial infection on one cheek.

State the factors in the family history that may support a genetic predisposition to atopic dermatitis in this infant.

In the given case, the factor or the element that favors the inheritance of atopic dermatitis by J.W. from her parents is that one or both the parents of the child would be having the history of the conditions like allergic rhinitis, eczema or hay fever. All the mentioned conditions tend to get acquired within the genetic composition of a person.  

Due to the inheritance of any of the mentioned allergic conditions from her parents, the child J.W. would have suffered from atopic dermatitis, that is, she would have inherited the constituents of the gene that makes her vulnerable to atopic dermatitis.  

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

the titanic would be the correct answer