Answer:
Option B is the answer.
Explanation:
If any term a = term b
and term b = term c
Then term a = term c and this property is called as transitive property of equality.
Similarly in this question
(1) NM ║ PO Given
(2) ∠2 = ∠3 alternate angles
(3) ∠1 = ∠3 Given
(4) ∠1 = ∠2 Transitive property
(5) LM ║ NO Interior angles
Option B is the answer.