Answer:
The correct option is C.
Explanation:
It is given that the lines graphed below are parallel.
We know that if two line having slopes m₁ and m₂ are parallel, then

In other words, the slopes of two parallel lines are same.
The slope of the red line is -4/3 and it is parallel to the green line. It means the slope of red and green line are same.
Slope of green line = Slope of red line
Slope of green line =

The slope of green line is -4/3 , therefore the correct option is C.