[Solved] When hearing the words "eel is on the wagon," you would likely perceive the first word as "wheel." Given "eel is on the orange," you would likely perceive the first word as "peel." This context effect best illustrates the organizational principle of A) proximity. B) interposition. C) closure. D) accommodation. Observations: The act of noting and recording something with instruments or the naked eye as part of a scientific or empirical study. Untreated Population: A group in a study or an experiment that does not receive the treatment or intervention being tested. Significance Level: The threshold in hypothesis testing that determines the probability of rejecting the null hypothesis when it is actually true, often denoted by alpha. Treatment Group: In experimental research, a group of subjects who receive the treatment or intervention under study.