Line is defined as a
a. a geometric shape that is open and moves from one point to another.
b. a slowly curving path along a plane.
c. a path through space.
d. the distance or area between, around, above, below, and within objects.

Line is defined as a path through space. In arts, it is the noticeable path created through a point that moves in space. It has only one dimension and differs in its direction, width and length. Usually, it gives meaning to the edges of a form and can be horizontal, vertical, straight or curved, diagonal and even thick and thin.It has diverse character and direction and leads you through the the work of art. Line is one important means of communication information.

B a slowly curving path along a plane

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction