Yes because <span>A </span>formal amendment<span> to the USA </span>constitution can<span> only be made by a vote of 2/3 of each house of congress and then by the legislatures of 3/4 of the states, or by a</span>constitutional<span> convention. Once that happens the </span>constitution<span> is changed, and the new provisions are law, just like the rest of the </span>constitution<span>.
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The answer to the given question above is BUILD IN REDUNDANCY. From the term itself "redundancy", notice that Sheena is repeating the same information about Marie Curie in all parts of her speech. From the introduction, to the internal summary and transition, up to the conclusion. In this way, audience would easily recall or remember the highlighted information about the topic.