Answer:
The correct answer will be- two alleles at same locus.
Step-by-step explanation:
Diploidy is a condition represented by the two sets of chromosomes on an organism receiving one set of the chromosome from one parent.
The alleles represent the variable form of a gene which determines the trait of an organism. The alleles show is affected in organisms only when two corresponding alleles from each parent come together and shows their equivalent response in diploid organisms.
Since the diploid organism contains tow sets of organisms from each parent therefore, an diploid organism contains a maximum of two alleles at the same position or locus.