Which of the following statements help in sustainable development with…

Sustainable development means meeting today's needs without exhausting resources for future generations. The guiding practice for resource conservation is often summarised as the '3Rs' -- Reduce, Reuse, Recycle -- each of which lowers net consumption and stretches resource availability, whereas increasing raw resource use works in the opposite direction by raising the draw on those stocks rather than easing it.

Among the four statements, reducing consumption (a), recycling resources (c), and reusing things (d) all directly lower demand on finite resources, so each supports sustainable development. Increasing resource use (b) raises consumption and works against conservation, so it cannot belong to a set of sustainable practices.

• (a), (b), (c): recycling and reducing consumption conserve resources, but pairing them with increasing resource use works against the conservation gained elsewhere.

• (b), (c), (d): recycling and reusing conserve resources, but including increasing resource use works against that conservation, and dropping reduced consumption leaves out a core conservation practice too.

• (a), (b), (d): reducing consumption and reusing conserve resources, but adding increasing resource use works against that conservation, and recycling is left out of the set as well.

Since statement (b) appears in every other combination and works against conservation, only the set that keeps (a), (c), and (d) together while excluding (b) reflects genuinely sustainable resource management.