Final answer:
Technological advancements do not impact RedPin based on the context given, whereas economic growth, urban population increase, and tax regulations do.
Step-by-step explanation:
The correct answer to the question of which external environmental factor does not impact RedPin given the provided options is D) Technological advancements. The factors listed that affect RedPin include increased disposable income, increasing number of people living in downtown Oklahoma City, new laws that increase sales taxes, and decreased unemployment. These correspond to the external factors such as economic growth (A), urban population increase (B), and tax regulations (C). However, technological advancements (D) are not explicitly mentioned as a factor impacting RedPin in the context provided.