From the four quotation words or phrases in each sentence, select the one that needs correction. If there is no error in the sentence, select 'No error'. Diversification is a "strategy" "to" "investing" in many "unrelated" business.

প্রশ্নঃ From the four quotation words or phrases in each sentence, select the one that needs correction. If there is no error in the sentence, select 'No error'. Diversification is a "strategy" "to" "investing" in many "unrelated" business.