Identify the conversion factor between meters and centimeters. Since 1 meter equals 100 centimeters, we use the factor 100 cm / 1 m.
Set up the conversion by multiplying the given length in meters by the conversion factor: \(0.129 \text{ m} \times \frac{100 \text{ cm}}{1 \text{ m}}\).
Notice that the unit meters (m) cancels out, leaving the result in centimeters (cm).
Perform the multiplication of the numerical values: \(0.129 \times 100\) (do not calculate the final value here, just set up the expression).
The result from the multiplication gives the length in centimeters, which corresponds to the correct answer choice.