Which sentence in this paragraph states the reason for the growing popularity of feudalism in medieval society

Ineed quick me on this one and others

The difference between point of view and choice of person in a story is that "person" is the literary name given to main characters in a story, and "point of view" is the perspective from which we view the story "person" is part of a term used to describe the type of narrator (as in first-person or third-person); "point of view" is how the antagonist understands the events of a story the terms are interchangeable; there is really no difference between them "point of view" refers to the perspective from which the story is told; "person" is part of a term used to describe a type of narrator (as in first-person or third-person)

Which statement contains an opinion? the ants serve to protect the acacia from other plants and herbivores. the acacia depends on pollinators for the exchange of genetic material. the acacia has no chemical defenses to discourage herbivores. the ants provide the acacia with the best protection from other plants and herbivores.