The best method for randomly determining which of two possible alleles would be the one shown on the second answer option: "B. drawing from a deck of cards printed with either an uppercase or a lowercase Q", since this would represent when choosing two cards randomly, the alleles the hypothetical offspring would have, being Q the dominant allele, and q the recessive allele. This is associated with traits each organism and human has, for example, and considering a dominant allele will mute a recessive one, a dominant allele for black color hair (B), will codes for black hair although there would be a recessive trait with it (Bb: black hair color), while there would be expressed a different color if the two alleles were recessive (bb, for example, brown hair color).