Answer:
1st question: e. SSS
2nd question: b. SAS
3rd question: b. Δ JLK
4th question: e. SAS
Explanation:
Note: Following condition should need to be fulfilled to be congruent triangle:
- SSS (Side-Side-Side): If the three sides of one triangle are equal to the corresponding three sides of another triangle, then the two triangles are congruent.
- SAS (Side-Angle-Side): If two sides and the included angle of one triangle are equal to the corresponding two sides and the included angle of another triangle, then the two triangles are congruent.
- ASA (Angle-Side-Angle): If two angles and the included side of one triangle are equal to the corresponding two angles and the included side of another triangle, then the two triangles are congruent.
- AAS (Angle-Angle-Side): If two angles and any side of one triangle are equal to the corresponding two angles and the same side of another triangle, then the two triangles are congruent.
- RHS (Right-Angle-Hypotenuse-Side): If one triangle is a right triangle and the hypotenuse and one leg are equal to the hypotenuse and the corresponding leg of another right triangle, then the two triangles are congruent.

For 1st Question:
In Δ PQR and ΔSTU
PQ=ST side
PR=SU side
QR=TU side
Therefore, Δ PQR ≅ ΔSTU By SSS axiom.
So, the answer is e. SSS

For 2nd question:
In ΔSTR and Δ PQR
TR=PR side
m ∡ SRT = m ∡ PRQ Vertically opposite angle
SR=QR side
Therefore, Δ STR ≅ ΔPQR By SAS axiom.
So, the answer is b. SAS

For 3rd Question:
In Δ QPR and Δ JLK
PR=LK side
m ∡ PRQ = m ∡ JKL Given Angle
QR=JK side
Therefore, Δ QPR ≅ Δ JLK By SAS axiom.
We can named the name of triangle by comparing congruent side and angle of the triangle
So, the answer is b. Δ JLK

For 4th Question:
In Δ QPR and Δ JLK
PR=LK side
m ∡ PRQ = m ∡ JKL Given Angle
QR=JK side
Therefore, Δ QPR ≅ Δ JLK By SAS axiom.
So, the answer is e. SAS