The thermodynamic process in which temeprature remains constant is

Options

A. Adiabatic process
B. Isochoric process
C. Isobaric process
D. Isothermal process

Answer

To solve the question, "The thermodynamic process in which temperature remains constant is?", we need to identify the correct term that describes this process.

### Step-by-Step Solution:

1. **Understand the Types of Thermodynamic Processes**:
- There are several types of thermodynamic processes, including isothermal, adiabatic, isochoric, and isobaric. Each of these processes has specific characteristics regarding temperature, pressure, and volume.

2. **Define Isothermal Process**:
- An isothermal process is one in which the temperature of the system remains constant throughout the process. This means that any heat added to the system is used to do work, and any work done by the system results in an equivalent amount of heat being removed.

3. **Examine Other Processes**:
- **Adiabatic Process**: In this process, there is no heat exchange with the surroundings, and the temperature can change.
- **Isochoric Process**: This process occurs at constant volume, but the temperature can change.
- **Isobaric Process**: This process occurs at constant pressure, but the temperature can also change.

4. **Conclusion**:
- Since we are looking for the process where the temperature remains constant, the correct answer is the **isothermal process**.

### Final Answer:
The thermodynamic process in which temperature remains constant is called the **isothermal process**.