Final answer:
The closest percent error to Diego's measurement is 4.3%.
Therefore the correct option A
Step-by-step explanation:
To find the percent error, we can use the formula:
Percent Error = (|Measured Value - Actual Value| / Actual Value) x 100%
In this case, the measured value is 22 cm and the actual value is 23 cm.
Substituting these values into the formula, we get: Percent Error = (|22 - 23| / 23) x 100% = 1/23 x 100% ≈ 4.35%.
Therefore, the closest percent error to Diego's measurement is 4.3%, which is option A.