Corporate social responsibility

I need an explanation for this Management question to help me study.

“Corporate Social Responsibility is the most effective strategy to address the issue of environmental sustainability. Critically examine this claim, using examples from international or environmental sustainability  to illustrate your answer.”

Requiremnent:

1.900-1000words,

2.No reference needed,

3.please give Citation when use example or book resource,example:(name, year)

4.this course is “International Marketing Management”,this information is in case you need to know it for writing this work?