Final answer:
Mr. Hathaway's speech was significant to seniors because it marked a turning point and offered meaningful insights. Graduation speeches like his are often used by speakers to connect with graduates while addressing larger societal topics or furthering political objectives.
Step-by-step explanation:
The opening day speech by Mr. Hathaway was likely more important to seniors because it represented a momentous occasion in their lives, akin to a graduation speech. Such addresses often encapsulate critical reflections, advice, and encouragement targeted towards graduates at pivotal transitions in their lives. Given the context provided, it seems Mr. Hathaway's speech may have had elements that resonated deeply with the senior audience.
Historically, politicians use speeches to address broader issues under the guise of relevant events. For example, Johnson's use of a graduation address to speak on the timeliness of concerns among new graduates indicates a strategic choice to connect with a particular audience while discussing larger societal themes. Similarly, the presidential speeches such as those by Bill Clinton and Barack Obama provided them with opportunities for national exposure and helped shape their political trajectories.