*Question E0A11:
To what should lanyards be attached while climbing?*  

*Correct Answer is  D: Tower legs*  

### AI Response: (may contain errors)  

When climbing a tower, safety is the top priority. Lanyards are an essential part of fall protection systems, and they must be attached to the most secure and stable part of the structure.

### Correct Answer: Tower legs

1. **Why the correct answer is correct:**
   - **Tower Legs:** The tower legs are the main structural components of the tower. They are designed to support the entire weight and stress of the tower, making them the most secure and stable attachment point for lanyards. Attaching lanyards to the tower legs ensures maximum safety for the climber.

### Why the other choices are incorrect:

2. **Antenna Mast:**
   - The antenna mast is typically not designed to support additional loads like a climber's weight. It is primarily meant to hold antennas and may not be structurally sound enough for safety equipment attachment.

3. **Guy Brackets:**
   - Guy brackets are used to attach guy wires, which stabilize the tower. They are not designed to bear the weight of a person and may not provide a secure attachment point for lanyards.

4. **Tower Rungs:**
   - Tower rungs are meant for climbing but are not designed to support the dynamic loads that can occur if a climber falls. They are not as structurally robust as the tower legs and should not be used for lanyard attachment.

### Safety Rule of Thumb:

- Always attach lanyards to the strongest and most stable part of the structure, which is typically the tower legs. This ensures that in the event of a fall, the lanyard will hold securely, minimizing the risk of injury.