Answer:
Given:
Two angles of a triangle are of measures 53 & 44.
We need to find the measure of the unknown angle.
According to the angle sum property, Sum of all angles of a triangle is 180°
Thus, 44°+53°+m∠1=180°
⇒ 97 + m∠1 = 180°
⇒ m∠1 = 180° - 97°
⇒ m∠1 = 83°
Therefore (B) 83 is the correct answer
