Answer:
Option C. ∠PQT and ∠TQS are supplementary.
Explanation:
When the addition of two angles give 180° Then the pair of angles is called as supplementary.
Means we have to search the angles which are on a straight line.
Option A. ∠PQT and ∠PQS sum is more than 90 but less than 180.
Option B. ∠PQT and ∠TQS sum of these angles is 90°
Option C. ∠PQT and ∠TQR sum is 180° so pair is supplementary
Option D. ∠TQS and ∠SQR sum is less than 180°.
Therefore option C is the answer.