For this question, due to the answers given, this question requires <u>connotation</u> to find the answer. The only answer that really describes what is said on the question is the first one: Race riots took place all over the country, because the word race tells about the racism, and the word <em><u>riot</u></em><u /> has a negative connotation, and in this case, riot means <u><em /></u><em /><em><u>angry</u> protestors,<u /></em> meaning that the sentence describes the anger over racism.<em />