When a group of people gather for common practice, activities and interests, they are make up society. Such people start to exchange experiences and views on interests, activities and practices, they can associate, work on, improve and create a community of common interests and preferences. When society's development over common interests reaches a high level, then a highly developed society, which in this way leaves a certain significance and trace in history, is a civilization.
I believe that would be C.
A noise that produces an echo when it bounces off a distant wall.
I'm not sure, but I think is C
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.
