Explanation:

- Option 1: 12

- Field hockey teams have 11 players on the field, including the goalkeeper.

- Option 2: 9

- In some variations of the game, like indoor hockey, there are fewer players, but it's generally not 9 in standard play.

- Option 3: 10

- This is incorrect for standard outdoor field hockey matches.

- Option 4: 11

- This is the standard number of players in a team during an outdoor field hockey match.

- Eleven players consist of forwards, midfielders, defenders, and a goalkeeper.

Option 4: 11