The tone of content must adhere to the bigger picture of a brand or company. It must completely align, or else the core message will be undelivered. Your answer should include how a brand wants to surface in front of a customer. What decides the writing style and the tone as well.
First-person is the I/we perspective.
The second person is “you/your” perspective.
Third-person is he/she/it/they perspective.
With this in mind, you will have to understand one more thing. The tone of writing social media content is different than the traditional one. Make sure you don’t mix up both during an interview. Above all, content with the brand image must be consistent.
The question intends to know about your writing style. One can also elaborate on:
Content structure
Smart & simple language
Informative writing
Engaging content