Humans are overwhelmingly more likely to be right-handed than left-handed. Among studies of nonhuman primates, Lesley J. Rogers and Gisela Kaplan’s 1995 study of wild orangutans did not report a tendency toward right-handedness, while S.G. Lutz-Maki and P.F. MacNeilage’s 1991 study of captive chimpanzees did. But the latter study involved only 14 individuals, and according to a meta-analysis of primate-handedness studies, from a statistical standpoint, a study needs to examine a population of at least 176 individuals to justifiably claim that the group exhibits handedness at the population level, suggesting that __________
Desmos Graphing Calculator
Verbal·Information and Ideas·Inferences
easyWhich choice most logically completes the text?
A
the apparent difference between the two studies’ results may be partly attributable to the 1991 study using a different standard to determine handedness than the 1995 study did.
B
any right-handedness exhibited by captive chimpanzees might be an effect of extended contact with humans.
C
the population size in the study that did not report right-handedness in orangutans is too small to justify that conclusion.
D
the population size in the study that reported right-handedness in chimpanzees is too small to justify that conclusion.