A.
The author urges the world to slow down and enjoy what nature offers us and what mankind has left us and rediscover life.
B.
The author persuades the world to return to the old times when an old-fashioned lifestyle was prevalent.
C.
The author complains about the boredom and quick-fix style of the modern life.
D.
The author advocates a new lifestyle in which the world can possible escape from the relentless pursuits of material desires.