Final answer:
The grains of a rock do indeed give the rock its texture.
Step-by-step explanation:
The statement 'A rock's grains give the rock its texture' is true. The texture of a rock is determined by the size, shape, and boundary relationships of its grains or crystals. For example, coarse-grained rocks have large grains that are usually larger than 1 millimeter, while fine-grained rocks have small grains that are less than 1 millimeter.