Final answer:
The feed-in technique in cornrowing is not meant to make the cornrow less visible; it is used to add extensions for a natural look, more volume, and longer-lasting wear.
Step-by-step explanation:
The feed-in technique in cornrowing is a method used to add extensions to cornrows to create a natural look, add volume, and ensure the hairstyle lasts longer. The question asks, which of the following is NOT achieved by the feed-in technique: 1) Create a natural-looking cornrow, 2) Add volume to the cornrow, 3) Make the cornrow last longer, 4) Make the cornrow less visible. The correct answer is option 4) Make the cornrow less visible. The feed-in technique is actually meant to make the cornrow more noticeable by adding volume and length and blending the extensions with the natural hair for a seamless look.