题目选项分析

Commercially available chemical fertilizers contain the same nutrients and micronutrients as organic fertilizers such as manure and composted garden clippings. Plants have tiny root hairs that absorb nutrients, and whether the source of the nutrients is organic or chemical is irrelevant to the plant's ability to take in the nutrients. Nevertheless, organic fertilizers are better for the health of the plant than are chemical fertilizers alone.

Which of the following, if true, would most strongly support the position above?

【选项】The typical gardener can't easily know the exact amount and type of nutrients in an organic fertilizer such as manure.