Neuro transmitter among the following is

Options

A. Serotonine
B. Dopamine
C. Noradrenaline
D. All the above

Answer

To solve the question regarding which of the following is a neurotransmitter, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Neurotransmitters**:
- Neurotransmitters are chemical messengers in the body that transmit signals in the nervous system. They facilitate communication between neurons and between neurons and muscles.

2. **Identify Examples of Neurotransmitters**:
- Some well-known neurotransmitters include:
- **Serotonin**: Involved in mood regulation.
- **Acetylcholine**: Important for muscle activation and memory.
- **Dopamine**: Plays a role in reward and pleasure.
- **Noradrenaline**: Involved in the fight or flight response.
- **Glutamate**: The main excitatory neurotransmitter in the brain.

3. **Analyze the Options Provided**:
- If the question provides options that include any of the neurotransmitters mentioned above, we need to identify which ones are indeed neurotransmitters.

4. **Select the Correct Answer**:
- If the options include serotonin, acetylcholine, dopamine, noradrenaline, and glutamate, then the correct answer would be that all of these are neurotransmitters. Therefore, if the options include "all of the above," that would be the correct choice.

5. **Conclusion**:
- Based on the information provided and the examples of neurotransmitters, the answer to the question "Neurotransmitter among the following is" would be option D, which states "all of the above."

### Final Answer:
- The answer is **D: All of the above** (if all mentioned neurotransmitters are included in the options).