Answer: The correct option is (B) 68°.
Step-by-step explanation: Given that the measure of angle 1 is 68°.
we are to find the measure of angle 5.
From the figure, we note that
lines s and t are parallel to each other and r is a transversal.
So, angles 1 and 5 are corresponding angles, and their measures must be same.
That is,
[tex]m\angle 1=m\angle 5.[/tex]
Since, we have
[tex]m\angle 1=68^\circ.[/tex]
So, we get
[tex]m\angle 5=68^\circ.[/tex]
Thus, the measure of angle 5 is 68°.
Option (B) is CORRECT.
