Concept:Emotion is a stirred-up feeling that involves both physiological and cognitive changes. Basic emotions like fear are universal and innate.
Explanation:Fear is one of the basic emotions (anger, disgust, happiness, fear, sadness, surprise).
It is found in all humans and arises from a sense of threat.
Other options are not emotions: Memory is a cognitive function, Attention is a mental focus, and Stimulus is an external trigger that may cause a response.
Therefore, only fear fits the definition of an emotion.
Answer:B. Fear