In recent years, "trace management" has been widely used in grass-roots work. Its advantage is that it can effectively restore the work of serving the people through the retained texts, pictures and other working materials for future verification. A grassroots unit in a certain area in order to strengthen "Management" has greatly increased the proportion of work materials in the assessment score. Obviously, this approach will make local grass-roots cadres spend a lot of energy on retaining work traces. which is the most likely underlying assumption of the above argument? ['Grassroots cadres attach great importance to assessment scores.', 'Some grassroots cadres lack service awareness to the masses.', '"Trace Management" requires all work traces to be retained.', 'Most grassroots cadres lack the "mark" condition.']