Which of the Following Research Methods Should Be Considered the Strongest

Multiple Choice

Which of the following research methods should be considered the strongest in the inferences it permits about perceptual development?

A) Use of conditioned head rotation in the study of auditory discrimination
B) Comparisons of brain anatomy of infants and children
C) Measurement of single-cell activity in the sensory cortex of adolescents
D) Observations of changes in infant heart rate during the presentation of a novel event