What is the English unit of measurement for weight?

The pound-force (lb-f) is the correct English unit of measurement for weight because it specifically measures the force exerted by gravity on a mass, making it directly related to weight in the context of English units. In the Imperial system, weight is often quantified in pounds or ounces, both of which are measures of force derived from mass under the influence of gravity. The pound-force is particularly significant because it incorporates the effect of gravity, making it a suitable measurement for weight, which is the force that gravity exerts on an object.

While newtons are a unit of force in the metric system (often used in physics to measure weight as well), pascals measure pressure, and ounce-force, although also a recognized unit of force, is less commonly used than the pound-force in standard practice for weight measurement in the English system. Therefore, the pound-force stands out as the primary unit for weight in this context.