A survey of clerical workers' attitudes toward their work identified a group of secretaries with very positive attitudes. They responded "Strongly agree" to such statements as "I enjoy word processing"and "I like learning new secretarial skills. " These secretaries had been rated by their supervisors as excellent workers -- far better than secretaries whose attitudes were identified as less positive. Clearly these secretaries' positive attitudes toward their work produced excellent job performance. Which one of the following identifies a reasoning error in the argument? ["It identifies the secretaries' positive attitudes as the cause of their excellent job performance although their attitudes might be an effect of their performance.", 'It attempts to prove a generalization about job performance by using the single example of clerical workers.', 'It uses the term "positive attitudes" to mean two different things.', 'It does not consider the possibility that secretaries with very positive attitudes toward their work might also have had very positive attitudes toward other activities.']