Para.2 D Because light at night has brought indisputable benefits,its use has expanded to the point where it is "inescapable",said a Royal Commission on Environment Pollution(RCEP)into artificial light and the environment. 2"We are losing arguably the most culturally universe and historically pristine of all natural vistas,"it warned.① Because light at night has brought indisputable benefits, its use has expanded to the point where it is “inescapable”, said a Royal Commission on Environment Pollution (RCEP) into artificial light and the environment. ② “We are losing arguably the most culturally universe and historically pristine of all natural vistas,” it warned. Para. 2