Answer: Brain.
- A Spinal cord
- B Brain
- C Reflex arc
- D Sense organ
Correct answer: B. Brain
Explanation: The vertebrate brain is divided into forebrain, midbrain and hindbrain.
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.