Whole sets of chromosomes is called as

The correct option is D Diploidy
A diploid cell contains two sets of chromosomes for the growth and development of the organism. The 22 pairs of homologous chromosomes contain same genes but the code for different traits in their allelic forms as one was inherited from mother and other from father. The 23rd pair is the sex chromosomes which differ in male and female. So the whole set of chromosomes is called diploidy.

So, the correct answer is 'Diploidy'.