Which distribution is approximately symmetric?

Question

A.
The figure shows a dot plot. On moving left to right on a line segment, first 4 crosses are shown, then 3 crosses are shown, then 3 crosses are shown, then 4 crosses are shown, then 2 crosses are shown, and then 1 cross is shown.
B.
The figure shows a dot plot. On moving left to right on a line segment, first 1 cross is shown, then 3 crosses are shown, then 5 crosses are shown, then 5 crosses are shown, then 3 crosses are shown, and then 2 crosses are shown.
C.
The figure shows a dot plot. On moving left to right on a line segment, first 1 cross is shown, then 2 crosses are shown, then 3 crosses are shown, then 3 crosses are shown, then 5 crosses are shown, and then 5 crosses are shown.
D.
The figure shows a dot plot. On moving left to right on a line segment, first 2 crosses are shown, then 5 crosses are shown, then 3 crosses are shown, then 2 crosses are shown, then 4 crosses are shown, and then 3 crosses are shown.

Answer 1

C. The dot plot in option C shows a roughly symmetrical distribution, with the bulk of the crosses in the middle and fewer crosses on either end. Option A shows more crosses on the left side, while option B and D show more crosses on the right side.