For the sentences in the passage, the correct answers are as follows:

1. **A. occupation** - "a weather watcher’s (1) occupation is to gather basic weather information..."
2. **C. relate** - "...and (2) relate to the weather forecast team on how the weather is changing."
3. **C. protect** - "...warnings to help people (3) protect their lives and property during severe weather events."

So the completed passage would read:
"As the title speaks for itself, a weather watcher’s occupation is to gather basic weather information such as rainfall, temperature, etc., and relate to the weather forecast team on how the weather is changing. Together with meteorologists, weather watchers provide up-to-date information, safety plans, and warnings to help people protect their lives and property during severe weather events."