Final answer:
The correct answer is C) Crimped braids, which involve braiding the hair and later opening the braids to create a crimped texture with added volume.
Step-by-step explanation:
The style that involves braiding the hair when either wet or dry and then opening the braid to create a crimped texture on textured hair with added volume is known as Crimped braids. Cornrows and flat twists, while also braided styles, do not involve opening the braids to create a crimped texture.
Twisted curls involve twisting sections of the hair but do not inherently create a crimped look when untwisted. Crimped braids can create a voluminous, textured look, which is achieved by braiding the hair and then later unraveling the braids.
This technique can be particularly effective on textured hair, enhancing the natural volume and providing a crimped pattern to the hair.