Gagan's response lacks depth and relevance to the question asked. Instead of providing a detailed approach to building a Python script for handling CSV files, Gagan's answer is vague and does not demonstrate any understanding of the task. The response does not align with the benchmark response, which outlines a clear and structured approach to the problem, including the use of Python libraries, error handling, and code documentation. Gagan could have improved by explaining the steps involved in reading, filtering, and writing CSV files using Python.