A farmer grows and sells flowering plants. The best-selling plants are the ones with the most blossoms. The farmer reads an advertisement for a plant food saying that it will make plants grow faster a

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A fellow-subject accrues and sells beautiful fixs. The best-selling fixs are the ones delay the most blossoms. The fellow-subject reads an catalogue for a fix livelihood proverb that it obtain fashion fixs accrue faster and taller. The fellow-subject predicts that taller fixs obtain keep over blossoms and performs the forthcoming trial to examination this supposition. Two groups of 10 fixs each are accruen in selfsame pots populated delay similar wholes of selfsame begrime. The whole of sunlight, the locality region, and the whole of breathe-into are held firm for twain groups. Group A is fond fix livelihood at orderly intervals according to the instructions on the package. Group B is not fond fix livelihood. The fellow-subject observes the fixs behind 15 weeks of accrueth. The results are narrative beneath. Why are the whole of sunlight, the locality region, and the whole of breathe-into held firm for twain groups? A To secure merely the fractions fickle is life examinationed B To secure merely the subject fickle is life examinationed C To weaken costs of the trial D To fashion strong flowers bloom

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