A river with one distant crossing separates two districts of similar homes. For market-area purposes, the river most likely acts as:

Correct Answer

D) A real boundary — substitution across it is weak

Why this is correct: A market boundary exists where substitution breaks down. A river with a distant crossing creates a significant physical and time barrier, making properties on opposite banks poor substitutes. Buyers on one side are unlikely to consider the other, creating a 'real' market boundary. Why the other choices are wrong: 'A scenic amenity uniting both banks' is wrong; while scenic, the barrier effect on commuting and access typically dominates market behavior. 'A minor detail buyers ignore' is wrong; the detour time makes it a major practical consideration. 'A jurisdictional boundary but not a market boundary' is wrong; it can be both, but the key is its impact on buyer substitution. Exam tip: For market boundaries, think like a buyer: what makes you stop looking further? Physical barriers that add significant time/cost are primary boundaries.