Lines l and m are parallel lines cut by the transversal line t. Which angle is congruent to ∠1?

Answer:
Option C
Step-by-step explanation:
Line 'l' and 'm' are parallel and a transversal line 't' intersects these lines.
∠1 ≅ ∠4 [Vertically opposite angles]
∠1 ≅ ∠5 [Corresponding angles]
∠1 ≅ ∠8 [Alternate exterior angles]
∠1 ≠ ∠6 [No property of the congruence is followed]
Option C will be the correct option.
Answer:
Option D
Step-by-step explanation:
if two parallel lines are cut by a transversal, then the alternate exterior angles are congruent, which leaves you with D.