Thad is four. One day, his aunt asks him if he wants to go on a walk and he declines and uses a swear word. He speaks in a pleasant voice, however. Thad's mother bursts out laughing. "I wonder where he heard that?" she says. Thad's aunt says, "Isn't that precious?"

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.