Explanation:

- Face Value: The face value of a digit is the value of the digit itself, irrespective of its position in the number.

- In the number 16008, the face value of 6 is simply 6.

- The options provided are:

- Option 1: 6 - This represents the face value, since the face value of 6 is 6.

- Option 2: 600 - This would be a representation of value considering place, not face.

- Option 3: 6000 - This represents the place value, not the face value.

- Option 4: 60 - This is neither the face nor the correct place value for 6 here.