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Which statement best expresses a main idea of the article "Two Days With No Phone"?
A. "Some experts are worried about how all that texting is affecting teenagers' lives." (paragraph 3)
B. "If they regularly lose sleep, she adds, teens may start having trouble in school." (paragraph 9)
C. "Kenny and Franchesca handed their phones to their mothers for safekeeping." (paragraph 14)
D. "Franchesca decided to continue the experiment for a while." (paragraph 19)
A. "Some experts are worried about how all that texting is affecting teenagers' lives." (paragraph 3)