An author's perspective can be influenced by several factors. From the list you've provided, the following all apply:
- Age - An author's age can shape their outlook and understanding of different subjects.
- Degrees - Educational background can influence the ideas and themes an author explores in their work.
- Politics - An author's political views often inform their perspective and the messages conveyed in their writing.
- Background - This includes cultural, social, and economic factors that shape an author's worldview.
- Experiences - Personal life experiences can heavily influence an author's insights, themes, and the characters they create.
So, all the options listed (age, degrees, politics, background, and experiences) can influence an author's perspective.