2. Social Return on Investment (SROI) is one tool for measuring the social impact generated by an organisation or project. It does so by benchmarking social outputs, such as meals provided or vaccines delivered, and assigning them financial values ($). a. Consider the main approaches to ESG investing. (min. 200 words) b. Identify which approach is most likely to use SROI as part of their portfolio construction considerations. (min. 200 words)