Mary Nabholz travels the same way to work every day. She notices advertisements in store windows when the ads first go up. However, after a few days, Mary no longer pays any attention to these ads because they have become familiar. Which of the following personal selection factors is affecting Mary Nabholz?
a. perceptual vigilance
b. perceptual defense
c. perceptual selection
d. adaptation

(D) Adaptation      

Explanation:

  According to the given scenario, the adaptation is one of the personal selection factor that majorly affecting the Mary Nabhloz as every day she noticed the same advertisement in window of the store.

By noticing each day she not longer paying attention to the ads as she get adapted or we can say that habitual by seeing regularly. The adaptation is one of the type of evolution process and it occur when the person become familiar with the similar thing every time.      

 Therefore, Option (D) is the correct answer.

i would say b. research typically uses a variety of sources