Lisako's Assignment in Biology Class Is to Grow Beans in Order

Lisako's assignment in biology class is to grow beans in order to measure the effect of light upon plant growth.She develops an experiment based upon a theory that the height of the plants will be proportional to the amount of light they receive.Which aspect of formal operational thought is the basis of Lisako's biology experiment?

A) the ability to understand figurative language
B) deductive reasoning, which utilizes hypotheses and predictions
C) the ability to engage in long-range planning
D) the ability to use universal ethical principles in problem-solving