Which of the following is the form that permits a shareholder to exercise the voting rights of his shares?

The form that permits a shareholder to exercise the voting rights of their shares is a proxy. A proxy is a legal document that allows a shareholder to delegate their voting power to another person, enabling that individual to vote on their behalf at a shareholders' meeting. This is particularly useful when a shareholder cannot attend the meeting in person but still wants to participate in the decision-making process regarding corporate matters, such as electing a board of directors or approving significant corporate actions.

While bond power, stock power, and stock certificates are all relevant in the context of securities, they serve different purposes. Bond power relates to transferring ownership of bonds, stock power aids in transferring ownership of stocks, and a stock certificate is a physical representation of stock ownership but does not itself convey voting rights. Therefore, the proxy is specifically designed to address the need for shareholders to exercise their voting rights effectively when they are not able to attend meetings personally.