Answer :
President Kennedy's purpose with this speech was to explain why the goal of reaching the moon first was necessary for America, as the third answer option shows.
Why was it important for the public to know this?
- Kennedy needed popular support to continue the space race.
- This is because the economic expense of doing so was very high and the American people could turn against these goals.
Kennedy needed to explain how the space race was important in establishing US dominance and influence, as well as establishing capitalism's success in providing scientific advancement.
More information about the space race at the link:
https://brainly.com/question/4228436