Is the questionnaire recovery rate of 100 reasonable?

The recovery rate of 100% is unreasonable. The reason is:

The recovery rate of 1 and 100% means that all participants have submitted questionnaires, which is usually a good sign that participants are serious about research or investigation. But this is not always necessary or the best thing.

Due to various reasons, the questionnaire recovery rate will be lower than 100%, such as the respondents have no time or interest to answer the questionnaire, and the questionnaire is lost or damaged.