A(n)\ an space that presents the right conditions for an individual, population or species to liveit can be as big as the Atlantic Ocean for some species of fish , or as small as a pond where a species of bacteria lives 1.environment 2.biome
3.ecosystem
4.habitat

explanation:

it's important for any number of settings.   but then i'm a retired teacher and my view may be biased.

it certainly will not weigh as a minus when applying to a college, while poor grades always work against you.

other factors are important like what you do to improve the community.  

d. the two authors are in awe of nature; their experiences, reveal that time in nature can change people.

explanation:

the second option.is correct