Which of the following is NOT a reason for the Chief Executive’s resignation?

The correct answer is based on the understanding of the conditions under which a Chief Executive in Hong Kong may resign. The reasons for resignation are typically grounded in significant personal circumstances or structural incapacities affecting their ability to govern effectively.

Serious illness qualifies as a substantial personal reason that could impede a Chief Executive’s capability to perform their duties. Similarly, inability to discharge duties speaks to situations where the Chief Executive could not function due to various factors, potentially including health issues or other personal circumstances that would prevent them from fulfilling their role.

Failure to sign a legislative bill does not typically serve as a valid ground for resignation. It is part of the Chief Executive's responsibilities to handle legislative matters, and while a failure to sign might provoke political consequences or challenges, it does not inherently compel resignation from the office.

Loss of support from the Legislative Council, while potentially destabilizing to a Chief Executive's position, does not in itself constitute a formal ground for resignation. Political support can fluctuate, and a Chief Executive may continue to serve even during periods of diminished backing from legislative members. Thus, it is not classified as a definitive reason for resignation like serious illness or inability to discharge duties.