Question

what is a measuring unit for the pressure of a liquid?
a liter
b fathom
c gallons per minute
d pounds per square inch

Explanation:

Step1: Analyze each option

• Option A: Liter is a unit of volume, not pressure.
• Option B: Fathom is a unit of length (used for measuring depth in water, equal to 6 feet), not pressure.
• Option C: Gallons per minute is a unit of volumetric flow rate, not pressure.
• Option D: Pounds per square inch (psi) is a unit of pressure. Pressure is defined as force per unit area. Here, the force is in pounds and the area is in square inches. For liquid pressure, it can be measured in psi (among other pressure units like Pascals, atmospheres etc.). So, pounds per square inch is a valid measuring unit for the pressure of a liquid.

Answer:

D. pounds per square inch