How many total minutes of anesthesia time does 1 hour and 45 minutes equal?

To determine the total minutes of anesthesia time for 1 hour and 45 minutes, you first need to convert the hour into minutes. There are 60 minutes in 1 hour, so 1 hour is equal to 60 minutes.

Next, you add the additional 45 minutes to this total. Adding these together:

60 minutes (from the hour) + 45 minutes = 105 minutes.

Therefore, the total anesthesia time for 1 hour and 45 minutes is 105 minutes. This calculation solidifies option C as the correct answer.