Fill in the blank with the correct option.

The President finally had to _____ the demands of the public for his resignation.

The correct option is accede to.

Step-by-Step Explanation:

1. Analyze the Context of the Sentence:
The sentence reads: "The President finally had to _____ the demands of the public for his resignation."
The word "finally" indicates a sense of reluctance, pressure, or eventual yielding after some time. The object of the action is "demands of the public for his resignation." This context suggests a verb that means to agree to, yield to, or comply with demands or pressure.

2. Examine the Meanings of the Given Options:
• ignore: To refuse to take notice of or pay attention to. If the President had to "finally" do something due to public pressure, "ignore" would contradict the word "finally," which implies a change of state or yielding.
• initiate: To cause a process or action to begin. A person does not "initiate" someone else's demands; rather, they respond to them.
• accede to: A phrasal verb meaning to agree to a demand, request, or treaty, often after initially resisting or yielding to pressure.
• condone: To accept and allow behavior that is considered morally wrong or offensive to continue. One does not "condone" demands for their own resignation in this grammatical context.

3. Conclusion:
The phrasal verb accede to fits the context perfectly, both grammatically and semantically, indicating that the President was forced to yield to the public's demands for his resignation.