The John Hancock ESG Core Bond Fund Class I (JBOIX) is a mutual fund that focuses on socially responsible investing by investing in fixed income securities that align with environmental, social, and governance (ESG) criteria. This fund aims to provide investors with a diversified portfolio of high-quality bonds while also considering the impact of their investments on the world. With a focus on ESG factors, this fund seeks to generate long-term returns while promoting sustainable and responsible practices.