Which of the following enables a lessor to sue in a state?

The correct choice is qualifying to do business in the state, as it directly relates to the legal ability of a lessor to engage in contractual activities, such as entering leases and pursuing legal action, within that state. When a lessor qualifies to do business, they are essentially obtaining permission from the state to operate in that jurisdiction, which includes the ability to initiate lawsuits if necessary. This process often involves registering the business, paying applicable fees, and complying with state regulations, ensuring that the lessor can operate legally within its boundaries.

While obtaining a Certificate of Incorporation is an important step for a corporation, it alone does not grant the right to sue in a state where the corporation is not registered to do business. Similarly, having a registered trademark provides exclusive rights to that trademark but does not directly impact the ability to engage in leasing transactions or legal actions in a specific state. Hiring a local attorney may assist in navigating legal matters but does not itself create legal standing for the lessor to sue.

Thus, qualifying to do business in a state effectively establishes the necessary legal framework for a lessor to operate and pursue legal remedies, making it the correct answer in this context.