The correct answer is
D) gathering food.<span>Caching or hoarding food, is a behavior characteristic for squirrels during winter. They usually do this by putting their food in a shallow hole which will serve as food when resources are scarce in winter. Also, squirrels maximize their food consumption and body mass making the reserves that will help the animals survive.</span>
Polyploidy is the state of a cell or organism having more than two paired (homologous) sets of chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes—one set inherited from each parent.