One reason would be the increased chance of Down syndrome
Most likely underweight, since the person isn't getting as many nutrients as everyone else, they wouldn't be able to gain as much mass.
Your answer would be the first one “prophase”
Explanation - prophase
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. Chromosomes are made of a single piece of DNA that is highly organized.
The difference is that diploid cells have 2 complete sets of chromosomes and haploid has only 1 set of complete chromosomes. Hope this helps!