I need a 100% original post on Training Evaluation

What is the relationship among Kirkpatrick’s four levels of evaluation? Would you argue for examining all four levels, even if your boss suggested you should look only at the last one (results) and, that if it improved, you would know that training had an impact? Provide at least one example (e.g., tool, device, etc.) that would be used to gather evaluation data at each level.

Your initial post should be 250 to 300 words. Use at least one additional scholarly source to support your discussion.