Final answer:
Generation Y, known for being innovative, expressive, and technologically savvy, does not count collective action as a key defining characteristic; it is a broader social concept not exclusive to any one generation.
Step-by-step explanation:
The key characteristics that are commonly attributed to members of Generation Y, or Millennials, do not include collective action as a defining trait. While Generation Y is known for being innovative and creative, expressive and tolerant of differences, and technologically advanced, collective action is a concept that describes the actions taken by a group of people to achieve a common goal, which is not specific or exclusive to any particular generation.
To further clarify the traits of Generation Y, it is important to note that this group is often characterized by their adaptability to new technology, preference for a work-life balance, and a tendency to challenge traditional corporate structures. While they may participate in collective actions, this is not considered a hallmark trait that defines the generation as a whole.
Therefore, the correct answer to the given question is: D. collective action.