The correct answer is the object is the most important part of the sentence.
Explanation:
In English, the passive voice is used when we want to emphasize certain part of the sentence, such as the person or the thing affected by the action. In this case, the writer of the sentence wants to focus attention on the object (the gift) by putting them at the beginning of the sentence, thus making it the subject (and the most important component of the sentence).
Ben is Willy's adventurous and lucky older brother. Of course, he's dead, so he only appears in the play as a character in Willy's troubled imagination. Willy totally idolizes Ben because he was an adventurer who escaped the world of business and got rich quick by finding diamonds in the African jungle