- A1200 m
- B1 km 20 m
- C1 km 2 m
- D1002 m
Step-by-Step Solution
In metres: 1 km 20 m = 1020 m, 1 km 2 m = 1002 m, and 1002 m. The longest is 1200 m.
Answer: A) 1200 m
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