what causes reflexes?

Question

A) when signals sent through sensory neurons are connected to motor neurons before they reach the brain
B) when signals sent to the brain do not enter the "conscious" parts of the brain
C) when the cerebellum "decides" on a respons without "consulting" the cerebelum
D) when sensory neurons are connected directly to the motor neurons, without having to enter the CNS

Answer 1

Stimulus? D.? I'm no genius..but I'd have to say D. sounds best.

Answer 2

Reflexes are governed by the autonomic nervous system and do not require conscious processing. I assume that this is what you mean in choice D.