The red-cockaded woodpecker, an endangered species, is dependent upon for maintenance of its source habitat

The red-cockaded woodpecker, an endangered species, is dependent upon fire for maintenance of its source habitat.
 This woodpecker is found in southeastern North America. His adaption to fire has several important consequences: the reduction of hardwood frequency in the pine ecosystem because of frequent tires and the softening of pine heartwood by red heart fungus .

The answer would be b. it is a learned trait