(D) It is caused by rhinovirus.
I'd say protein synthesizer.
Two genes, BRCA1, located on chromosome 17q21 (5,6), and BRCA2, located on 13q12-13 (7–9), have been shown to predispose to familial breast cancer.
The answer is “C”. Natural selection is about ones traits being better than another’s which allow it to survive in the wilds longer.
