In This Diagram Neuron [Dropdown 1] Is a Third Order

Short Answer

In this diagram neuron [dropdown 1] is a third order neuron and conducts impulses from the [dropdown 2] to the [dropdown 3].

Dropdown 1 choices:
A
B
C
Dropdown 2 choices:
thalamus
peripheral somatic receptors
brain and spinal cord
Dropdown 3 choices:
primary somatosensory area of the cerebral cortex
brain or spinal cord
thalamus