Read the text and answer the question by selecting all the correct responses. More than one response is correct.
Psychological researchers usually recognize that facial expressions mirror emotional states. In fact, varied emotional states give rise to certain patterns of electrical activity in the facial muscles and in the brain. The facial-feedback hypothesis argues, however, that the causative relationship between emotions and facial expressions can also work in the alternative direction. According to this hypothesis, signals from the facial muscles (“feedback”) are sent back to feeling centers of the brain, and so an individual’s facial expression will influence that person’s emotional state. According to Darwin’s words: “The free expression by outward signs of a feeling intensifies it. On the opposite hand, the repression, as far as possible, of all outward signs softens our emotions.” will smiling give rise to feelings of goodwill, for example, and frowning to anger?
Q. According to the passage, what did Darwin believe would happen to human emotions that were not expressed?
(A) They would become less intense.
(B) They would last longer than usual.
(C) They would cause problems later.
(D) They would soften our emotions.