Military Spouses is the only publication in the world that targets readers who are "married to the military." Its content reflects the unique set of challenges, hardships, and rewards to those whose spouses are in the military. The marital status that has been used to distinguish the market for this magazine is an example of a(n):
a. market base.
b. selector base.
c. identifier.
d. segmentation base.
e. discriminator base.
ANSWER: d