Manufacturers could reduce waste and conserve resources by making products that use less are difficult to repair

use more materials

are more durable

are disposable

are disposable.

Explanation:

Manufacturers could reduce waste and conserve resources by making products that are disposable.

This ultimately implies that, manufacturers of finished products that are being used by the consumers should endeavor to make them easily disposable without any adverse effect on the environment.

"a.) well–developed vascular system."

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