The article is available on the web, therefore, answering on that basis.
Answer:
The correct answer would be - from the third-person point of view.
Step-by-step explanation:
In this article, the author did not include his personal opinion or assumption and stated strictly what is related to research explained about teen and changes in their brain and behavior
He also did not use any pronoun for himself or any other resources he included and explained the changes in the brain take place during teen years.
Thus, the correct answer would be - from the third-person point of view.