*Question G8C04:
Which of the following describes Baudot code?*  

*Correct Answer is  C: A 5-bit code with additional start and stop bits*  

### AI Response: (may contain errors)  

Baudot code is a character encoding system used in telegraphy and early data communication systems. Here's why the correct answer is C, and why the other choices are incorrect:

1. **Correct Answer: C - A 5-bit code with additional start and stop bits**
   - Baudot code is a 5-bit code, meaning each character is represented by a combination of 5 bits. 
   - To ensure proper synchronization and separation of characters during transmission, additional start and stop bits are used. Typically, one start bit and one or more stop bits are added to each character.

2. **Why the other choices are incorrect:**
   - **A: A 7-bit code with start, stop, and parity bits**
     - This describes ASCII, not Baudot. ASCII uses a 7-bit code with optional start, stop, and parity bits for error checking.
   - **B: A code using error detection and correction**
     - Baudot does not inherently include error detection and correction mechanisms. It is a simple 5-bit code without these features.
   - **D: A code using SELCAL and LISTEN**
     - SELCAL (Selective Calling) and LISTEN are not related to Baudot code. They are used in aviation communication systems for selective calling, not character encoding.

In summary, Baudot code is characterized by its 5-bit structure with additional start and stop bits, making option C the correct choice.