Final answer:
1 inch is equal to 2.54 centimeters. Correct option is d)
Step-by-step explanation:
Inches and centimeters are two units of length measurement. The conversion factor between them is that 1 inch is equal to 2.54 centimeters.
To convert inches to centimeters, you can multiply the given number of inches by the conversion factor. For example, if you want to convert 1 inch to centimeters, you would multiply 1 by 2.54, which gives you 2.54 centimeters.
Therefore, the correct answer is d. 2.5 centimeters.