Letter d I believe is the answer I might be wrong
Answer:
https://www.nap.edu/read/5787/chapter/6
https://www.nature.com/scitable/knowledge/library/how-does-social-behavior-evolve-13260245/
Explanation:
I hope that it will be helpful
An alteration to chromosome structure which only involves one chromosome is called MONOSOMY.
Alterations in chromosomes structures usually leads to mutation. Monosomy refers to the condition of heaving a diploid chromosome complement in which one chromosome lacks its homologous partner.
A cell, they are the tiniest living thing on earth.
