Final answer:
To convert 45 minutes into decimal hours, divide by 60, resulting in 0.75 hours or option C.
Step-by-step explanation:
The question at hand involves converting minutes into hours in decimal form. To change 45 minutes to decimal hours, you need to divide the number of minutes by 60, since there are 60 minutes in one hour. So, the calculation would be:
45 minutes รท 60 minutes per hour = 0.75 hours.
Therefore, the correct decimal representation of 45 minutes is 0.75 hours, which corresponds to option C.