The chart with the information to answer this question may be found in other Brainly's link, so I attach it now.
Answer:
Explanation:
To facilitate the accompaniment of the reasoning, I copy the data here:
Object     Motion
   X           3 units left, 3 units right
   Y           6 units right, 18 units right
   W          8 units left, 24 units right
   Z          16 units right, 8 units left
The <em>distance</em> is the scalar magnitude that indicates the total length of the path traveled.
The <em>displacement</em> is the vector that indicates how far the end point and the initial point are.
In order to calculate the distance, the displacement and the ratio r = distance/displacement, to check which object has a distance that is three times as great as its displacement, i.e. r = 3, we use this new chart:
Object    Motion                                    Distance     Displacement  ratio
   X          3 units left, 3 units right        3 + 3 = 6       3 - 3 = 0            ∞
   Y          6 units right, 18 units right    6 + 18 = 24    6 + 18 = 24       1
   W         8 units left, 24 units right      8 + 24 = 32   -8 + 24 = 16     2
   Z          16 units right, 8 units left       16 + 8 = 24    16 - 8 = 8         3
The ratios were calculated dividing the distance by the displacement: distance / displacement.
For the object Z, that was 24 / 8 = 3. Thus, the object that has a distance that is three times as great as its displacement is the object Z.