Explanation:

- Trap shooting is a type of shotgun shooting sport.

- Option 1: Clay-pigeon shooting

- This is correct.

- It refers to shooting at clay targets released from a machine.

- Mimics the flight of birds for sport.

- Option 2: Crawl shooting

- This option is incorrect.

- There's no recognized shooting sport by this name.

- Option 3: Wood-pigeon shooting

- Incorrect option.

- It refers to hunting live pigeons, not a shooting sport.

- Option 4: Pigeon shooting

- Historically correct but now largely replaced by clay-pigeon shooting.

- Could involve live birds but less common today.

Option 1: Clay-pigeon shooting is the correct answer.