Under what condition would tomatoes fail to turn red?

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If they were placed at the bottom of the containerIf they were combined with mature applesIf the container did not contain any ripe applesIf a smaller amount of "hay" had been included in the containerNone of the above

Explanation

Tomatoes rely on the presence of ethylene gas emitted by ripe apples to ripen and turn red. Without ripe apples in the container, the tomatoes would not receive enough ethylene to change color. Therefore, the absence of ripe apples prevents the tomatoes from ripening.