Choose the topic that best limits the broad subject history.
a) history of money
b) history of irish music
c) history of the pirate jean lafitte
d) history of smugglers in the united states

Practicality.

Explanation:

The three basic issues associated with persuasive speeches include need, plan, and practicality. The need aims to persuade the readers about the specific problem that should be examined or require some changes. While the plan convinces the readers to think of a plan to address the problem and the practicality displays if the idea is feasible enough to succeed in real or not.

As per the question, the key subject of persuasive speeches that Kobe addresses in the given excerpt is regarding 'practicality.' He displays to the audience that his proposed idea or plan possesses the ability to succeed in reality. He shows the readers that if the drinking age is reduced, it will prevent the youth from deliberately involving in such activities by considering alcohol consumption as a forbidden pleasure. It will normalize the experience and not make the youth go unnecessarily crazy for it and help them learn appropriate drinking behavior in the presence of adults.