Which of the following figure has reflectional symmetry?
a. figure a
b. figure b
c. figure c
d. figure d

Step-by-step explanation:

Reflection symmetry refers to a symmetry with respect to an axis of reflection. Most common example is drawing an axis inside the figure, the resulting haves are like a mirror reflection.

So, in this case, if we draw a vertical axis on figure B, each half would be a reflection of each other. In other words, if we reflect figure B, it would result the same figure, because is symmetric.

Therefore, the right answer is option B.