Final answer:
For a relaxer retouch application, you start with the scalp and new growth to prevent over-processing and ensure uniform texture. The correct area to begin is the new hair that has grown since the last relaxer was applied.
Step-by-step explanation:
When performing a relaxer retouch application, you start at the scalp and new growth. The purpose of a relaxer retouch is to apply a chemical relaxer to the new growth of hair that has not been previously treated, to ensure a uniform texture and smoothness throughout the hair.
The correct answer is D) Scalp and new growth. It is crucial to apply the relaxer to the new growth only, as applying it to the previously relaxed hair can lead to over-processing and damage.