Which sentence is the best translation of the text?
o
a. you look too happy for someone who has so recently committed
such a horrible crime.
b. your guests suspect that you are responsible for the king's death,
so beware
o
c. stop acting like you're so upset, and be sure to look happy and
cheerful for your guests tonight.
d. your rugged good looks make you the perfect king, and your loyal
subjects await your command.

I would say the correct answer might be B.

An organisms niche is (A) The range of physical and biological conditions in which an organism lives and the way in which it uses those conditions.
 Technically, any of the answers could be true, however, A is the only one that offers a broad definition.A niche is not only the location and conditions in which an organism lives, but also the organisms role within that niche and how it uses the resources to survive.