The hypothetical sphere within which the price determining forces viz. demand and supply are operating is known as

Correct option is B

A market is defined as the conceptual or hypothetical space where demand and supply interact.
It is not necessarily a physical place but an economic environment.
Prices of goods and services are determined through these interactions.
Both buyers and sellers participate and influence market outcomes.
This concept forms the foundation of price theory in economics.
Hence, the correct term for such a sphere is market.