Why would your body have trouble maintaining homeostasis if you are sick with a very high fever?

Although the evidence is only indirect, fever is believed to enhance the body's immune response. The increased temperature may actually impair the replication of infecting bacteria and viruses that are adapted to survive best at your normal homeostatic body temperature range. Hope this helps.

It would be c. because they are the same species. the definition for genus is a principal taxonomic category that ranks above species and below family, and is denoted by a capitalized latin name