Answer:
A. GT ≅ NQ is needed because the congruent angles to be included between the two corresponding congruent sides.
Explanation:
Side-Angle-Side theorem states that two triangles are congruent when two sides and the included angle are congruent with another triangles two sides and included angle. The included angle needs to be in between the corresponding sides.
This is why it is called SAS, Side-Angle-Side-- the angle is in between the two sides.