Answer:
The correct answer is the object is the most important part of the sentence.
Step-by-step 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).