Explanation:

- The standard length of a singles badminton court is 13.4 meters.

- Correct Answer: Option 4 - 13.40 m

- The width for singles matches is 5.18 meters.

- Badminton courts need accurate dimensions for fair play.

- Option 1: 13.44 m is slightly longer than the true measurement.

- Option 2: 13.55 m is also incorrect, exceeding the official length.

- Option 3: 14 m is significantly too long for standard singles play.