Neurons in the autonomic nervous system include:

Options

A. two motor neurons and one ganglion
B. one motor neuron and two ganglia
C. two motor neurons and no ganglia
D. two motor neurons and two ganglia

Explanation

To solve the question regarding the neurons in the autonomic nervous system, we will analyze the options provided and understand the structure of the autonomic nervous system.

### Step-by-Step Solution:

1. **Understanding the Autonomic Nervous System (ANS)**:
- The ANS is a part of the peripheral nervous system that controls involuntary bodily functions. It regulates processes such as heart rate, digestion, and respiratory rate.

2. **Structure of Neurons in the ANS**:
- The ANS consists of two main types of neurons: preganglionic neurons and postganglionic neurons.
- Preganglionic neurons originate in the central nervous system (CNS) and synapse with postganglionic neurons in autonomic ganglia.

3. **Analyzing the Options**:
- **Option A**: Two motor neurons and one ganglion.
- **Option B**: One motor neuron and two ganglia.
- **Option C**: Two motor neurons and no ganglia.
- **Option D**: Two motor neurons and two ganglia.

4. **Identifying the Correct Structure**:
- In the ANS, there are always two motor neurons involved in the pathway: the preganglionic neuron and the postganglionic neuron.
- These two neurons communicate through one ganglion where the synapse occurs.

5. **Conclusion**:
- The correct answer is **Option A: Two motor neurons and one ganglion**. This reflects the typical structure of the autonomic nervous system where one ganglion connects the two motor neurons.

### Final Answer:
**Neurons in the autonomic nervous system include: Two motor neurons and one ganglion.**