Answer:
The correct answers are: "to provide details that may be important to the text", "to analyze how successfully a text achieves its purpose", "to offer an opinion or perspective about the text as a whole", and "to discuss important events that caused the author to write the text".
Explanation:
All options apply to the question, but the fourth because it is more common to compare texts in a comparative analysis, which is not the purpose of a prologue. A prologue usually provides a contextualization to the text, whether by biographical notes and facts, whether by sociological background. Moreover, the prologue provides a short analysis of how the text works and the main subjects discussed and how they are approached.
