Final Answer:
Correct nominative pronoun in the sentence, I just bought my new car on Thursday is I. Option A is the answer.
Step-by-step explanation:
The correct nominative pronoun in the sentence is "I." The pronoun "I" is used as the subject of the sentence, indicating the person who performed the action of buying the new car. In English grammar, nominative pronouns are used for the subject of a sentence. In this case, "I" is the subject pronoun that correctly identifies the person who made the purchase.
Option A is the answer.