GMAT Critical Reasoning (CR) | Re: The size and yields of grape vines can be increased through the

The size and yields of grape vines can be increased throughthe application of fertilizers , which provide nutrients necessary for the health of the vines. However, during the recent drought,vineyard owners observed that the vines treated with less fertilizer handled the hot, dry conditions better than did those treated with more fertilizer.

Which of the following, if true, would best explain the surprising result?

we would like to show the hidden benefits that fertiliserless soil brings to the
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