Answer:
The correct answer is second option.
AD ║ BC
Explanation:
Alternate interior angles in a parallel lines are equal.
From the figure we can see quadrilateral ABCD.
It is given that m<8 = m<4
Consider the line segment AD and BC,and AC is a traversal on these lines, m<8 and m<4 are alternate interior angles, which is equal.From this we can conclude that, AD║ BC