Which of the following is a characteristic of a correct vector diagram? a. The scale is clearly labeled. c. Both magnitude and direction of the vector are clearly labeled. b. An arrow (with arrowhead) is drawn in a specific direction. d. All of the above.

d. All of the above.

Explanation:

In physics a vector is a quantity that has a magnitude and  a direction.It is represented by an arrow facing the direction of the quantity with a length proportional to the magnitude of the vector.In a vector diagram the size of the  vector arrow represents the magnitude of the vector.

it should be -8.6 cm hope this out