Final answer:
An on-base placement in hairstyling typically results in the strongest base strength and the most volume, as the hair is lifted directly from the root.
The correct option is a.
Step-by-step explanation:
An on-base placement in cosmetology, especially when applying curls, refers to the position of a curl relative to its base. When a curl is positioned directly on its base, this will result in the strongest base strength.
Therefore, if you are looking for the strongest base strength, you would aim for the curl to be on base. However, the question asks what an on-base placement will result in, apart from the strongest base strength.
Based on typical outcomes in hairstyling, an on-base placement is often associated with additional volume due to the hair being lifted directly from the root.
Therefore, the correct answer to the student's question would be option a. 'the most volume'.
The correct option is a.