The correct answer is: The author views "authenticity" not as a fixed entity, but as a process through which individuals construct meaning within their relationships with society. In the final paragraph of the passage, the author explicitly states, "The author believes that 'authenticity' in modern times is not a fixed entity, but rather a constantly fluctuating and reinterpreted process. It is the very act by which individuals proactively construct their own meaning and value within their relationships with society and others." Incorrect option A is wrong because while SNS and consumer goods are given as examples, the author does not state that authenticity should be defined by them. Incorrect option B is wrong because the author does not assert that authenticity is being lost, but rather that its meaning is becoming more complex. Incorrect option C is wrong because while acknowledging the paradox, the author does not question the value of authenticity itself; instead, they emphasize the importance of exploring its multi-layered meanings.