The passage's setting is in the 21st century. The clue that supports this conclusion is "His office was on the thirtieth floor, far too high to get much more than a faint glow from the street lights below." (A)
What doe this indicate?
This indicates that the story takes place in a modern, urban setting, with tall skyscrapers and a lot of artificial lighting at night. High-rise buildings became prevalent in the 21st century, making this a strong indicator of the passage's setting.
The other options do not explicitly provide any clues about the passage's setting. "Shia froze, as if he were caught by the gaze of..." suggests that Shia is feeling uneasy or startled, which could happen in any era. "He sent his boss a single text message before turning over and trying to force himself to sleep: I don't think I can work anymore" indicates that Shia is feeling overwhelmed and stressed, but this could also happen in any era. "Shia didn't stop running until he had burst the ground floor exit to the parking garage and found his car" simply describes Shia's actions and does not provide any clues about the setting.
Therefore, the strongest evidence that the passage takes place in the 21st century is the mention of a thirtieth-floor office. This suggests a modern, urban setting that is more typical of the 21st century.