Answer: completeness
Explanation: In simple words, assertion of completeness can be defined as the urge of the management of company to make sure that all the translocation that occurred during the year were receded properly and no significant transactions is left out or committed.
This tendency of management is considered a positive trait as omissions of transactions can result in incorrect financial results which can further loss investors or other such stakeholders.
In other words, the management wants to make sure that all transactions were recorded in the period in which they belong to.