A text might have multiple perspectives if it has more than one author, as different authors can bring their unique viewpoints and experiences to the text. Additionally, if the text covers a difficult topic, it may elicit various opinions and interpretations, leading to multiple perspectives. If the text contains a deep understanding, it may explore various angles and interpretations of a subject, showcasing different viewpoints.
So, the correct options are:
- if the text has more than one author
- if the text covers a difficult topic
- if the text contains a deep understanding
The option regarding "additional facts" is less likely to directly cause multiple perspectives unless those facts lead to different interpretations.