Which of the following describes the shapes of paint brushes?

The shapes of paint brushes are effectively categorized by their design and the functions they serve in painting. The answer identifying bright, round, flat, and filbert encompasses the traditional types of brush shapes that artists commonly use.

A bright brush has a short, stiff bristle arrangement ideal for making controlled strokes, while a round brush features a pointed tip, allowing for detailed work and fine lines. The flat brush, with its wide, rectangular shape, is perfect for broad strokes and edge work, while the filbert brush combines the characteristics of both flat and round brushes, offering versatility for soft, rounded strokes and more precise applications.

The other choices, while they list various brush characteristics, do not accurately represent the commonly accepted shapes used in painting. For instance, round, triangular, oval, and square do not reflect the conventional naming associated with paint brushes, which can lead to confusion when discussing artistic tools. Similarly, descriptors such as angular, tapered, flat, and wide or long, short, narrow, and thick do not align with specific brush types but rather describe dimensions or characteristics that may apply to various types of brushes without capturing their common names and uses in painting contexts.