Final answer:
A viewer crying at the end of a particularly sad movie is an example of an aesthetic impact, illustrating the power of artistic choices to evoke emotional responses.
Step-by-step explanation:
An aesthetic impact refers to the emotional or sensory experience a person has in response to a work of art. Among the options provided, D. a viewer crying at the end of a particularly sad movie is an example of an aesthetic impact. This response is a direct emotional reaction to the content and presentation of the film, illustrating how the artistic choices and narrative have the power to affect the viewer on a personal level. This is in line with reader-response theories, which emphasize the emotional and intellectual responses evoked by a literary or artistic work.