What is the primary function of a bond trustee as defined in the indenture?

The primary function of a bond trustee as defined in the indenture is to enforce the terms of the debt agreement. The bond trustee acts as an intermediary between the bondholders and the issuer of the bonds, ensuring that the issuer complies with the covenants outlined in the indenture. This includes monitoring the issuer's financial health, collecting interest and principal payments, and taking action on behalf of the bondholders in case of default. By fulfilling these duties, the trustee protects the interests of the bondholders and helps ensure that the agreement's conditions are met.

The other choices do not accurately reflect the role of the bond trustee. While managing the issuer's finances or handling litigation might occur in some contexts, they are not the primary responsibilities of a bond trustee. Similarly, providing investment advice is outside the scope of the trustee's functions, as their role is more about safeguarding the rights of the bondholders rather than offering personal financial guidance.