What is the equivalent of 15 minutes in quarter hours?

To determine the equivalent of 15 minutes in quarter hours, it is essential to understand that a quarter hour is equal to 15 minutes. The term "quarter" refers to one-fourth of an hour, and since there are 60 minutes in an hour, one quarter hour is calculated as follows:

60 minutes ÷ 4 = 15 minutes.

Therefore, when converting 15 minutes to quarter hours, it equals 1 quarter, confirming that 15 minutes is truly equivalent to one full quarter hour, or 1/4 quarter. This means that it represents the entire value of a quarter hour rather than any fractional part of it. In this context, the first option accurately represents that 15 minutes is indeed equal to 1/4 of an hour, making it the correct choice.