Final answer:
The correct approximation of log 91,620 to six decimal places is 2.255273.
Step-by-step explanation:
The common logarithm of a number can be found by using the formula log x = y, where x is the number and y is the logarithm. In this case, we need to find the logarithm of 91,620. To approximate the logarithm to six decimal places, we can use a calculator. The correct approximation is option A. 2.255273.