Correct option is D
Diagnostic evaluations serve a specific purpose in the educational process, aiming to identify students' learning needs and challenges early on, thus informing targeted instructional strategies. The irrelevance of comparing the learning achievements of all students in this context highlights a fundamental misunderstanding of diagnostic evaluation's objectives. Unlike summative assessments, which may rank or grade students' performance at the end of a learning period, diagnostic evaluations are formative in nature. They are designed to understand each student's unique learning profile without pitting them against each other competitively. This individualized approach enables educators to tailor instruction to address specific learning gaps, thereby enhancing the educational experience and outcomes for each student.