What is the format of 45° 30' 15"?

The correct format of 45° 30' 15" is indeed Degrees, Minutes, Seconds. This notation is a common way to express geographic coordinates, where the angle is divided into degrees (°), which are further divided into minutes ('), and those minutes are divided into seconds (").

In this example, 45 represents the degrees, 30 represents the minutes, and 15 represents the seconds. This format is particularly useful for navigation and precise location pinpointing, as it allows for a high degree of accuracy. Each component (degrees, minutes, seconds) has a specific role in determining a point's location on the Earth.

The other formats mentioned, such as Degrees and Decimal Minutes or Decimal Degrees, represent coordinates in different ways, which do not apply to the provided format. For instance, Degrees and Decimal Minutes would have a notation like 45° 30.25', and Decimal Degrees would express the entire coordinate in a single decimal format, like 45.5042°. Thus, considering the structure and components present in the notation provided, Degrees, Minutes, Seconds is the accurate choice.