Which graph represents a proportional relationship?

Answer:
Graph represented by option A.
Step-by-step explanation:
We are asked to choose the graph that represents a proportional relationship.
We know that a proportional relationship is in form [tex]y=kx[/tex], where k represents constant of proportionality.
We can see that graph represented by option A is the correct choice as the y-intercept is 0.
The equation of the graph represented by option A would be [tex]y=mx[/tex], where m represents slope of line.
Therefore, option A is the correct choice.