C. It was written to prove that all pesticides were potentially harmful to the environment and should be banned from widespread use.
Explanation:
'Silent Spring' is an environmental book written by Rachel Carson. The book is to educate the readers about the adverse effects of DTD powder and pesticides on crops and agriculture. Through the medium of this book, carson sternly abominates the chemical industry that blinded it's customers eyes towards the ill-effect of using pesticides and chemicals on crops.
So, the statement that explains the historical context for the book is that it was written to prove that chemicals and pesticides are harmful to environment and should be banned world wide.
