A bond whose proceeds are used only to finance or refinance a combination of both environmental and social projects is called :

Correct Answer: C (Sustainability Bond)

Why it is correct: A Sustainability Bond is a debt instrument where the proceeds are exclusively applied to finance or re-finance a combination of both environmental (green) and social projects. The International Capital Market Association (ICMA) formally defines and standardizes this through its Sustainability Bond Guidelines (SBG). These guidelines establish that sustainability bonds must align with the core components of both the Green Bond Principles (GBP) and the Social Bond Principles (SBP). By combining these criteria, sustainability bonds allow issuers to address broad, interconnected challenges, such as funding a renewable energy initiative (environmental) while simultaneously developing affordable housing (social).

Why the other options are incorrect:

• A) Green Bond: This is incorrect because the proceeds of green bonds are allocated exclusively for projects with clear environmental or climate benefits (such as renewable energy or pollution prevention), without a mandated social focus.
• B) Social Bond: This is incorrect because social bonds strictly finance projects that aim to achieve positive social outcomes (such as improving healthcare, education access, or food security) rather than environmental goals.
• D) Sovereign Bond: This is incorrect because a sovereign bond is a standard debt security issued by a national government to fund general government spending and manage liquidity. Its proceeds are not specifically ring-fenced for environmental or social projects unless explicitly issued as a specialized 'Sovereign Green Bond'.

Takeaway: Remember the equation: Sustainability = Environmental + Social. A Sustainability Bond merges the specific objectives of Green Bonds (focusing on the Earth) and Social Bonds (focusing on the People) into a single, comprehensive financial instrument.