Concept:Use angle sum property of a triangle and supplementary angles formed by parallel lines.Explanation:In △NPM, the sum of interior angles is 180∘.So, ∠N+∠P+∠M=180∘.65∘+55∘+∠M=180∘∠M=180∘−65∘−55∘=60∘Since x and ∠M are interior opposite angles of parallel lines, they are supplementary.x+60∘=180∘x=180∘−60∘=120∘Answer:A. 120∘