Concept:
Properties are classified as:
• Intensive → independent of mass (e.g., pressure, temperature)
• Extensive → depend on mass (e.g., volume, energy)
Step 1: Evaluate kinetic energy (A).
Depends on mass:
\[
KE = \frac{1}{2}mv^2
\]
Hence extensive → incorrect.
Step 2: Evaluate thermal conductivity (B).
Material property → independent of size → intensive → correct.
Step 3: Evaluate pressure (C).
Force per unit area:
• Independent of system size
Hence intensive → correct.
Step 4: Evaluate entropy (D).
Depends on mass → extensive → incorrect.
Step 5: Evaluate volume (E).
Depends on size → extensive → incorrect.
Step 6: Final conclusion.
Correct: B and C.
\[
\boxed{\text{Answer: B and C only}}
\]