Explanation:

- Commence means to begin or start something. It denotes the onset of an activity, event, or process.

- Option 1: Start - This is a direct synonym for commence. Both words indicate the initiation of an action or process.

- Option 2: Shoot - This can be used in contexts like sports or photography but is not synonymous with commence as it refers more to the action of firing or launching.

- Option 3: Stand - This means to be in an upright position or to withstand something. It does not relate to beginning an activity.

- Option 4: Stop - This is the opposite of commence, indicating the end rather than the beginning.

Correct Answer: Option 1: Start