Answer:
C. Graph B
Step-by-step explanation:
A proportional linear function, also known as a direct variation, represents a relationship between two variables where one variable is a constant multiple of the other.
The graph of a proportional linear function is a straight line that passes through the origin (0, 0) and extends infinitely in both directions.
From the given answer options, Graph B is the only graph where the line passes through the origin. Therefore, the graph that represents a proportional linear function is:
[tex]\Large\boxed{\boxed{\sf Graph\;B}}[/tex]
