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The idea that represents the suggestion in the text based on the underlined sentence on page 3 as follows:
Thus, the correct option is A.
An altruistic act may be defined as an act in which one individual sacrifices his/her own fitness, thoughts, and opinion for the benefit of others.
According to the question, the underlined sentences demonstrate some sorts of information that we significantly received from the external world that governs our mental behavior and identity.
Therefore, the correct option for this question is A.
To learn more about Sentences, refer to the link:
https://brainly.com/question/552895
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