Identify the point of view of the following sentence. the purpose of diplomacy is the protection of a nation's interests abroad. first person second person third person

The correct answer is third person.
First person would include pronouns such as I, me, we, us, etc. Second person would include the pronouns you, your, etc. Given that there are no such pronouns in this sentence, it is safe to assume that the point of view used here is third person.