Answer:
D. decline
Step-by-step explanation:
Based on the information provided within the question it can be said that the vinyl records in this scenario seem to be in the decline stage of the product life cycle. This stage refers to when a product has already peaked in performance and sales begin to fall and production will ultimately come to a halt. This is what is happening to the LP stores since digital downloads have taken over and the only people buying LP's now are die-hard consumers.