Final answer:
The student is discussing the parts of speech in the sentence, specifically the proper noun 'rajni', the verb 'went', and the preposition 'to' as well as the possessive adjective 'her'.
Step-by-step explanation:
The word 'rajni' is a proper noun, referring to a person's name. In this case, it is the name of a student. 'Went' is the past tense of the verb 'go' which indicates an action that happened in the past. 'To' is a preposition that shows the direction or destination. 'Her' is a possessive adjective that shows ownership.
Learn more about Parts of speech