Who has expressed readiness to take over as president in the event of a tragedy involving Trump?

The correct answer is JD Vance. As a prominent Republican figure and U.S. Senator from Ohio, Vance has publicly shown support for the Trump administration and its policies. In the context of threats to the president's safety or ability to serve, it is reasonable for emerging political leaders to express their readiness to take on roles that may become necessary in times of crisis. This underscores not only political realism but also an understanding of the chain of succession in government.

Politicians in positions of prominence often prepare for various scenarios, including unforeseen tragedies, and endorsements of their readiness would resonate with constituents and party supporters. This response reflects the strategic positioning of leaders within the party who are ready to step up during critical times, keeping their political ambitions and public service in focus.

While other options may be notable figures, they have not made public statements regarding their readiness to assume the presidency under such circumstances. This distinction sets JD Vance apart as a relevant response within the current political landscape.