What are the four key points of competent communication

Is the sentence the refree blew her whistle and both teams rushed onto the field a coumpound or simple sentence

Read the following conclusion for an essay that claims that extreme sports should be more highly regulated because they are too dangerous: whether it is a high level of physical exertion, or extra doses of the "fear factor," it is common for extreme athletes to beat at the door of fate. it is these people who tempt their own mortality, while curious onlookers wait anxiously for the outcome, who must be protected from themselves. which statement provides the most accurate evaluation of the paragraph? a. the closing statement is unsatisfying b. the passage introduces new evidence. c. the thesis is not restated. d. the style is informal and inconsistent.

Which statement best paraphrases these sentences from the text