Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. Rational appeals in advertising are certainly limited by children's emotional immaturity and the indirect nature of their associations. B. Indirect appeals to children's psychological states or associations can limit the effectiveness of rational appeals in advertising. C. Rational appeals play a much smaller role in advertisements for children than emotional appeals and psychological associations do. D. Rational appeals in advertising aimed at children should certainly be limited until the children are emotionally and psychologically ready.