What allows for the greatest mobility in pin curling?

The correct answer is the full stem curl, as it provides the greatest mobility for styling. A full stem curl is characterized by the hair being rolled away from the scalp and secured with a clip or pin, leaving a significant portion of the hair shaft free. This design allows the curls to move more freely and provides a softer, more natural wave in the finished style.

In pin curling techniques, the type of stem significantly affects how much movement and flexibility the curl will have. Full stem curls offer unrestricted motion because the base—where the curl is anchored—does not limit the strands like other stem types would. By allowing more of the hair to remain loose, full stem curls can be styled and adjusted more fluidly, making them ideal for creating soft and versatile looks. This is particularly beneficial when aiming for hairstyles that require movement, such as those seen in vintage or artistic styling.

Other types of curls, like no stem and half stem curls, provide less movement because they anchor more of the length closer to the scalp. No stem curls, having no base curl, yield tighter, more defined curls, which sacrifice mobility for curl definition. Thus, a full stem curl is the best option for achieving the desired flexibility and movement in the hairstyle.