Final answer:
Neriah has experienced an external stimulus when she saw a colorful print ad for a bathing suit in a clothing store.
Step-by-step explanation:
Neriah has experienced an external stimulus. An external stimulus refers to any sensory input from the environment that causes a response or reaction. In this case, Neriah saw the colorful print ad for a bathing suit, which alerted her to the fact that summer is approaching and she needs to buy a new bathing suit.
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