affinity maturation-
because antibodies can potentially be generated against millions of unique epitopes, the size of an organisim's genome would need to increase exponentially in order to every possible antigen- binding side.
I believe the correct answer from the choices listed above is the second option. It is the genes that is responsible for passing albinism from a parent organism to its offspring. Genes are what you get from your parents, proteins are what you get from eating meat, codons are basically the stuff in genetic codes and base pairs make up your DNA.
It would be the first one. Hope this helps :)