Answer:
Viruses determines the border line between the living and non living organisms. Viruses always requires a host to show the characteristics of the living organism.
Virus may also acts as pathogen for the human being. The virus has the ability to change evolve their genetic material rapidly. In case of the immunization of the influenza virus, virus might evolves quickly for the particular one vaccine and helps in providing long term protection.
<span>Justin has limited range of motion in his legs but wants to compete on the obstacle course he and his friends created. The accommodation that can be made to help him most fully participate is to allow him to go around obstacles too difficult.
If he can't do it, he should just move on and try to continue the obstacle course.
</span>
D is the answer due to lack of knowledge and accessibility
