Explanation
Correct answer: B.
Choice B is the best answer. Author 1 describes the puzzle that physicists still can’t solve: at a microscopic level, the “laws of physics” suggest that we should be able to reverse processes that are not reversible at a macroscopic level (and, maybe, turn back time!). The experiment confirmed that those processes are not reversible even on the microscopic level, but it didn’t explain why. This supports Author 1’s point that physicists still don’t fully understand how things work at a microscopic level—maybe the laws need to be revised.
Why the other choices are wrong
Choice A
Choice A is incorrect. We can’t infer that the author of Text 1 would respond this way to the experiment. Text 2 does name two of the physicists involved in the experiment, but it never suggests that they disagree on anything.
Choice C
Choice C is incorrect. This is the opposite of what the experiment suggests. The experiment confirmed that the macroscopic-level law (“these things can’t be reversed—like time”) was still true on the microscopic level—meaning it supports the current understanding of physics at a macroscopic level.
Choice D
Choice D is incorrect. We can’t infer that the author of Text 1 would respond this way to the experiment. Neither text makes this distinction between laboratory findings and the way the universe works in general.