What is the average velocity of the object from t=1s to t= 3 s? A. 1 m/s
B. 0.5 m/s
C. -0.5 m/s
D. -1 m/s

Explanation:

Since this is a distance v time graph, the slope of the line from 1s to 3s is the velocity. However, it looks like, at t=3, the velocity is 0, so getting the definite velocity is not going to happen. We can estimate it as closely as possible. Since the line is tending from the upper left to the lower right, the slope is negative, so the velocity is also negative. That leaves only C or D as our answers. And the slope is closer to -1 than to -5, so choice D. is the one you want.

pretty sure it's false