Most interneurons are 

Options

A. unipolar
B. bipolar
C. multipolar
D. apolar

Answer

To answer the question "Most interneurons are:", we will analyze the types of neurons and identify the correct classification for interneurons step by step.

### Step-by-Step Solution:

1. **Understanding Interneurons**:
- Interneurons are neurons that act as a bridge between sensory neurons (which carry signals from sensory receptors to the central nervous system) and motor neurons (which carry signals from the central nervous system to muscles).
- They play a crucial role in processing information and reflexes.

2. **Types of Neurons**:
- Neurons can be classified based on their structure into four main types: unipolar, bipolar, multipolar, and apolar.
- **Unipolar Neurons**: These have one cell body and one axon. They are primarily found in the embryonic stage of development.
- **Bipolar Neurons**: These have two cell bodies and are typically found in specific locations such as the retina of the eye.
- **Multipolar Neurons**: These have multiple cell bodies and are the most common type of neuron in the central nervous system. They can connect with many other neurons.
- **Apolar Neurons**: These do not have a defined cell body and are not common in the nervous system.

3. **Identifying the Correct Type for Interneurons**:
- Given that interneurons are involved in connecting sensory and motor neurons, they require a structure that allows for multiple connections.
- The multipolar structure is ideal for this function because it can integrate signals from many sensory neurons and send signals to multiple motor neurons.

4. **Conclusion**:
- Based on the definitions and functions of the different types of neurons, we conclude that most interneurons are **multipolar**.

### Final Answer:
Most interneurons are **multipolar**.