To find out how many centimeters are in 1 inch, we can look at the values in the provided table. The table shows that:
1 inch = 2.54 centimeters (since 5 inches correspond to 12.7 centimeters, which means 1 inch is 12.7 cm / 5 = 2.54 cm).
Therefore, the correct answer is:
B. 2.54 centimeters