Which technique is used to prepare hair for styles by creating a cushion at the scalp?

Back-combing is the correct technique used to prepare hair for styles by creating a cushion at the scalp. This method involves teasing the hair by combing it toward the scalp, which adds volume and texture. By pushing the hair downwards, this technique creates a base that helps support styles, allowing for a more structured and lifted look. The cushion created at the scalp is essential for achieving certain hairstyles, particularly those that require height, like updos or bouffants.

Other techniques listed, such as barrel curling, cascade curling, and bonding, serve different purposes. Barrel curling is primarily focused on adding curls and waves through the use of heated tools or rollers, while cascade curling refers to a method of creating larger, flowing curls, often with a specific technique of wrapping hair. Bonding, on the other hand, is a method used for adding hair extensions or creating longer-lasting styles through adhesive products. Each of these techniques has distinct applications, illustrating why back-combing is the definitive choice for preparing hair with volume at the scalp.