In this case, we have two terms that can be discarded instantly, homozygous be dominant or recessive implies that both copies are the same allele, on the other hand, we have hemizygous and heterozygous, in the first case means that an individual presents only a member of the chromosomal pair, or a segment of the chromosome instead of the normal pair, the second case heterozygous means that each copy is a different allele, therefore this is the correct answer.