The correct answer states that the modern perception of time alienates us from our natural physical and mental rhythms, creating mental pressure to constantly seek efficiency. This is the central argument of the passage, as mentioned in the second and third paragraphs: 'clock time has disconnected us from natural rhythms and our inherent physical and mental rhythms' and 'this transformation in the sense of time is at the root of the mental suffocation modern people feel'. Option 1 is too specific and not the main point. Option 2 is contrary to the passage's content. Option 3 is a part of the problem but not the core issue, which is the internal, psychological pressure.