*Question G1B04:
[97.113(c)] Which of the following transmissions is permitted for all amateur stations?*  

*Correct Answer is  C: Occasional retransmission of weather and propagation forecast information from US government stations*  

### AI Response: (may contain errors)  

The correct answer to the question is:

**C: Occasional retransmission of weather and propagation forecast information from US government stations.**

### Explanation of the Correct Answer:
- **Occasional retransmission of weather and propagation forecast information from US government stations** is permitted under FCC regulations. This is because such transmissions are considered to be in the public interest and do not violate amateur radio rules, as long as they are not done excessively or for commercial purposes.

### Why the Other Choices are Incorrect:
- **A: Unidentified transmissions of less than 10 seconds duration for test purposes only**  
  - This is incorrect because all amateur transmissions must identify the station's call sign. Even short transmissions must include identification, so unidentified transmissions are not permitted.

- **B: Automatic retransmission of other amateur signals by any amateur station**  
  - This is incorrect because automatic retransmission of other amateur signals is generally not allowed unless specifically authorized. There are strict rules regarding retransmission to prevent interference and ensure proper identification.

- **D: Encrypted messages, if not intended to facilitate a criminal act**  
  - This is incorrect because amateur radio rules prohibit the use of encryption. All communications must be in plain language to ensure that they can be understood by others, promoting openness and transparency in amateur radio operations.

### Summary:
- The only option that aligns with FCC regulations for amateur radio is the retransmission of weather and propagation information from government sources, making it the correct choice. 

### Key Rule:
- Always remember that amateur radio communications must be identifiable and not encrypted, and retransmissions must adhere to specific guidelines to ensure compliance with regulations.