Which of These Biological Factors Has Been Shown to Influence

Multiple Choice

Which of these biological factors has been shown to influence a child's preferences among toys?​

A) Size of the corpus callosum in proportion to the size of the cerebral cortex
B) ​Amount of testosterone exposure before birth
C) ​Ratio between the transmitters serotonin and norepinephrine in the brain
D) ​Mean velocity of action potentials of spinal nerves