Correct Answer: The Border-Gavaskar Trophy was won by India in Australia.

Solution : The first option is the correct answer.

Passive voice is a grammatical construction where the subject of the sentence undergoes the action expressed by the verb, rather than performing it. The subject "India" in the active sentence becomes the agent in the passive construction and is placed after the verb. The active verb "won" is changed to the passive form "was won". The direct object "the Border-Gavaskar Trophy" in the active voice becomes the subject in the passive voice. The prepositional phrase "in Australia" remains unchanged as it indicates the location where the action took place.

This structure follows: "[Subject] + [Passive Verb] + [Agent] + [Prepositional Phrase]."

Therefore, the correct answer is: The Border-Gavaskar Trophy was won by India in Australia.