Which of the following is NOT a part of preparing the testing environment?

Providing snacks is not a necessary part of preparing the testing environment for assessments related to the Interservice Nonlethal Individual Weapons Instructor Course or similar testing situations. The focus during the preparation of a testing environment is on creating conditions that foster concentration and minimize distractions. This includes clarifying directions to ensure that participants understand the assessment process, ensuring a calm atmosphere to facilitate focus and performance, and gathering all necessary test materials to avoid interruptions during the testing itself. While snacks may be a nice addition in some contexts, they do not contribute to the integrity or effectiveness of the testing environment in the same way that the other actions do.