Sheelah Was Able to Jerk Her Hand Out of the Scalding

Multiple Choice

Sheelah was able to jerk her hand out of the scalding water before sensing any pain because this withdrawal reflex

A) was activated by interneurons in her spinal cord.
B) did not involve any activity within her central nervous system.
C) was activated by the rapidly responding reticular formation of her brain.
D) was activated by her self-regulating autonomic nervous system.