What is the value of n? A) 41° B) 139° C) 141°D) 180°

In the diagram we can see that
[tex]n_2=139^{\circ}[/tex]because they are vertically opposite angles.
And
[tex]n_2=n[/tex]because they are alternate interior angles, so
[tex]n^{\circ}=139^{\circ}[/tex]Letter B.