The best answer is:
A) The former was used to inform Americans about their nation; the latter was used to present a candidate for office.
President Bush’s State of the Union address serves as a platform for reporting on the state of the nation and outlining the president's agenda and policies. In contrast, the "Daisy Girl" advertisement, created by Lyndon B. Johnson's campaign during the 1964 election, was a political advertisement designed to evoke fear and persuade the public against his opponent. Thus, this choice accurately captures the fundamental distinction in purpose between the two communications.