Inconsistent scoring is the odd one out from the given options which does not comes under the errors of self-inventories.
Step-by-step explanation:
Self-report inventory or study is a type of study performed to get responses from an individual or a group of individuals on specific topics. Examples of such studies are Interviews and Questionnaires or Surveys.There are various errors in such studies such as Social desirability bias, Deception, a wrong impression of the questions, etc.
All these types of errors might cause a decrease in the validity of the study by producing incorrect results.Hence, option C is correct because inconsistent scoring is not an error in self-report studies and scoring is mostly excluded from such studies.