Final answer:
To create half-base curls with moderate lift, the hair should be held out at a 90-degree angle. This allows for the desired balance in curl formation and volume.
Step-by-step explanation:
To produce half-base curls, strong curls with moderate lift or volume, you should hold the hair out at a 90-degree angle. This angle allows for a balanced elevation that is neither too flat nor too perky, thus creating the desired effect of moderate volume with a strong curl. Holding the hair at the precise angle is crucial when styling to achieve the expected result.