Step 1: Understanding the Metric System.
In the metric system, one metre is equal to 100 centimetres. This is a fundamental unit conversion in the system, where the base unit for length is the metre, and the centimetre is one hundredth of a metre.
Step 2: Verifying the Options.
- Option (1): 10 cm is incorrect because there are more than 10 cm in a metre.
- Option (2): 1000 cm is incorrect as that would be the case for 10 metres, not 1 metre.
- Option (3): 100 cm is the correct answer, as 1 metre equals 100 centimetres.
- Option (4): 50 cm is incorrect, as it is half of a metre.
Conclusion:
Therefore, the correct answer is (3) 100 cm.