A good conclusion describes the task of "summing up the passage" or summarizing the main points discussed in the text.
One of the tasks of a good conclusion is to sum up the passage. To determine the correct answer, it is important to understand the purpose of a conclusion. A conclusion is the closing part of a passage or piece of writing, and its main function is to bring the ideas together and provide a concise summary of what has been discussed. It allows the reader to reflect on the main points and messages conveyed in the passage. Therefore, the correct answer in this case is "summing up the passage".
