What is the main idea of this excerpt from kennedy's address at rice university? yet the vows of this nation can only be fulfilled if we in this nation are first, and, therefore, we intend to be first. in short, our leadership in science and in industry, our hopes for peace and security, our obligations to ourselves as well as others, all require us to make this effort, to solve these mysteries, to solve them for the good of all men, and to become the world's leading space-faring nation. john f. kennedy, "john f. kennedy address at rice university on the space effort" a. the importance of the united states winning the space race b. the obligation the united states has to support scientists and engineers c. the ability of u. s. scientists to gain new knowledge about space d. the vow to have peaceful negotiations with foreign countries