All plants need light, a suitable climate, and a (n) ______ supply of water and minerals from the soil, but some species grow best in the sun and others thrive in the shade.
【正确答案】
D
【答案解析】 固定用法。an ample supply of water and minerals意为“充足的水和矿物质供应”，符合句意。故答案为D。