To prove that triangle ABC is congruent to triangle QRS by ASA (Angle-Side-Angle) congruence, you need to establish two angles and the side between them as being congruent in both triangles.
From your provided information, you have:
- \( \overline{AB} \cong \overline{QR} \) (one pair of sides)
- \( AC \cong \overline{QS} \) (another pair of sides)
- \( \angle A \cong \angle Q \) (one pair of angles)
For ASA congruence, you need:
- Two angles and the side between them are congruent.
You already have:
- \( \angle A \cong \angle Q \)
- You still need to establish that the side between them is congruent, and you need one more angle.
So, based on your options, you should have:
- \( \angle C \cong \angle S \)
This would be the information required to complete the congruence proof using ASA.
Thus, the additional needed statement would be:
\( \angle C \cong \angle S \).