Explanation:

- In basketball, a free throw is an unopposed attempt to score from a line in front of the basket.

- Each successful free throw is worth 1 point.

- Typically, a player earns one or more free-throw attempts following certain fouls.

- Option:1 - 1: This is correct. One point is awarded for a successful free throw.

- Option:2 - 2: This is incorrect. Free throws are not worth two points.

- Option:3 - 3: This is incorrect. Free throws are not worth three points.

- Option:4 - 4: This is incorrect. Free throws are not worth four points.