One summer on the family farm, Sarah assisted an ailing sow with the birth of her litter. Unfortunately, the sow died due to a post-birth infection. Sarah was in charge of feeding and tending to the piglets and, over time, the piglets began to follow Sarah around. Which statement best explains this scenario?
a. From a contextual perspective, the piglets consider Sarah part of their exosystem.
b. From an evolutionary perspective, the piglets have attached to Sarah like they would to a mother.
c. From a humanistic perspective, Sarah is fulfilling her desire to be a veterinarian.
d. From a sociocultural perspective, Sarah simply empathizes with abandoned piglets.