[Solved] On the professional level,_____ have opened new opportunities for work and career development. A) Personal online blogs B) Social networking sites C) Pornographic sites D) News sites E) Torrent sites Reservation Price: The maximum or minimum price a consumer is willing to pay for a good or service. Utility Function: A mathematical representation of a consumer's preference ranking for various bundles of goods, used in economics to analyze consumer behavior. Barbie's Preferences: This term does not reference a recognized economic concept, but could figuratively refer to a theoretical model of consumer choice or preference, using Barbie as an example. Good 1: Good 1 typically refers to a specific item or product in economic models, representing a variable used to analyze various economic scenarios.