The correct answer is C. The author's attitude toward and opinion about the topic
Step-by-step explanation:
In texts, the author's perspective more commonly known as the tone refers to the author's attitude, opinions, beliefs, and position in relation to the topic or issue he or she writes about that can be neutral, positive, negative, among others. This author's perspective can be identified mainly by the use of language and words used to refer to the topic that suggests the author's attitude. Additionally, in the case of literary works the tone is also revealed through the plot, the themes suggested by the author and in some cases the mood. Considering the previous ideas the phrase that defines the author's perspective is "the author's attitude toward and opinion about the topic" because this concept deals with the position of the author in relation to the topic of a text.