Pressure depends on weight divided by base area Steps:

• Pressure P = weight W / base area A; same P if W/A is equal.
• Assume all blocks have identical weight (standard setup unless specified).
• Compare base areas: Q and R differ (e.g., Q larger), so different P.
• S and T share identical base area, yielding same P.

Why D is correct:

• S and T have equal base areas and weights, so P = W/A is identical per the pressure formula.

Why the others are wrong:

• A: P and T have different base areas, so unequal pressures.
• B: Q and R have mismatched areas, leading to different pressures.
• C: Q and S differ in area, resulting in unequal pressures.

Final answer: D