What is the basic idea of circular economy?

Correct answer: Keeping products and materials in use for as long as possible through repair, reuse and recycling

A circular economy changes the usual linear pattern of take, make, use and dispose. It aims to keep products, components and materials useful for as long as possible through durable design, maintenance, repair, sharing, reuse, refurbishment and recycling. This reduces demand for new raw materials and prevents avoidable waste, although safe recovery and responsible production remain important. Option B is correct because it states the central idea of retaining value and use. Option A describes the wasteful linear model, option C depends only on virgin materials, and option D directly increases waste rather than closing material loops.