‘Global 500’ awards are given for the outstanding achievement in which of the following field ?

‘Global 500’ awards are given for the outstanding achievement in which of the following field ?A. Population control
B. Protection of environment
C. Elimination of corruption
D. Drug free society

The Global 500 Roll of Honour was launched in 1987 by the United Nations Environment Programme (UNEP) to recognize and honor environmental achievement. The award is a tribute to success on the front lines of environmental action