Answer:
B and C are parallel because they have the same slope.
Explanation:
Parallel lines always have the same slope m.
Standard form of slope equation is:

Where m is slope, b is y-intercept.
So, lines with same "m" are always parallel.
In the given graph, two lines have the same "m" and those are B and C.
B and C are parallel because they have the same slope.
![\rule[225]{225}{2}](https://img.qammunity.org/2023/formulas/english/college/eq413d752mwtrwwenrzwldxt4w1olmf1b3.png)
Hope this helped!
~AH1807