How would you signal that your longitude is 3 degrees 25 minutes?

The correct way to signal your longitude of 3 degrees 25 minutes is by using the letter "G" followed by the numerical representation of the degrees and minutes. The format typically includes a letter that indicates the type of coordinate being provided. In this instance, "G" signifies geographical coordinates in the form commonly used for longitudes.

The numerical portion, "0325," represents 3 degrees and 25 minutes, formatted with leading zeros, which is standard in navigational contexts to maintain a consistent length when working with coordinates. Thus, the full signal "G0325" effectively communicates the specific longitude in question.

The other choices contain different prefixes that do not correctly denote geographic longitude. Each letter represents a different type of information or coordinate system and does not correspond to the accepted format for longitude signaling in maritime navigation.