Which of the following segments includes active military personnel?

The segment that includes active military personnel is the "In-Service" category. This designation specifically refers to those individuals who are currently serving in the military, whether they are in the Navy, Army, Air Force, Marines, or Coast Guard. Their status as active members means they are engaged in military duties and responsibilities at present.

In contrast, the other categories do not include currently active personnel. For example, "Prior Service" refers to individuals who have previously served in the military but are not currently active, while "Inactive" indicates those who are not in active duty status but still retain certain military affiliations, such as reservists or members of the National Guard who are not currently activated. The "Female" designation, though it does address a demographic, does not classify personnel based on their active status in the military. Thus, by focusing on those who are actively enlisted and undertaking military responsibilities, the "In-Service" classification is clearly the appropriate answer.