Final answer:
The feature of the reading program that is determined by the scope and sequence of phonics and word-reading skills is structure.
Step-by-step explanation:
When considering the scope and sequence of phonics and word-reading skills as they pertain to lesson design and the type of reading practice, the feature of the reading program in question is structure. This structure is fundamental in determining the progression through which students will encounter and learn different phonics rules and reading skills. Having a structured program helps ensure that the material is presented in a logical and effective order.