How would you describe "inadequate" on a checklist?

The term "inadequate" on a checklist refers to a situation where something does not fulfill the basic requirements or minimum standards necessary for a particular task or evaluation. When something is described as inadequate, it clearly indicates that it falls short of what is needed and lacks the necessary quality or effectiveness.

Option B, which relates to failing to meet basic requirements, captures this definition perfectly. It reflects a scenario in which the criteria set forth are not achieved, emphasizing a deficiency in quality or performance. This underscores the essence of inadequacy, which is a failure to reach expected levels of performance, rather than exceeding them or meeting them competently as implied by other options.