Final answer:
Contextually, President Roosevelt's speech can be described as 'inspirational and impactful' based on the reactions and historical significance accorded to his inaugural address and fireside chats.
Step-by-step explanation:
The adjectives used to describe President Roosevelt's speech are not provided directly in the materials given. However, examining the content and reactions to Roosevelt's inaugural address and his fireside chats, it's evident that the language used to describe his communication would likely be positive. Roosevelt's inaugural address is noted as one of the most famous and oft-quoted in history, suggesting it was inspirational and impactful. Listeners found his fireside chats soothing and the chats conveyed feelings of reassurance and camaraderie, as if the president were directly speaking to the people as equals. Roosevelt used these speeches to promote his New Deal agenda, encourage national unity, and instill confidence in his presidential plans. His choice of words sought to evoke optimism and a spirit of community. Therefore, contextually, it seems most accurate to describe his speech as 'inspirational and impactful.'