Answer:
A 
 Explanation: 
 ∠WPS +∠OPW = 180 (adj angles on a str line) 
 ∠WPS +110 = 180 
 ∠WPS = 180 - 110 
 = 70° 
 ∠RWQ + ∠QWT +∠TWU = 180 (adj angles on a str line) 
 ∠RWQ + 60 + 50 = 180 
 ∠RWQ + 110 = 180 
 ∠RWQ = 180 - 110 
 = 70°
 ∠PWU + ∠USP + ∠ WPS = 180 (adj angles on a str line) 
 ∠PWU + 40 + 70 = 180 
 ∠PWU + 110 = 180 
 ∠PWU = 180 - 110 
 = 70°