Snow leopard is a world-class endangered species, and it is a national-level protected animal. I think this is undoubtedly strong evidence of the rise of the snow leopard population. Which of the following, if true, would best refute the above view? ['Some countries have established protected areas to protect snow leopards.', "Snow leopard's living environment continues to deteriorate, and it begins to enter human living areas for food.", 'Some snow leopards also come out during the day.', 'Humans pay more attention to snow leopard activity than before.']