Institution: জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় (JKKNIU) Exam: ক ইউনিট || জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় || 2012
Topic: Pair of Word, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The term "swan song" refers to a final performance or work produced by an artist, indicating a culmination of their efforts or a farewell expression. The phrase originated from the ancient belief that swans sing a beautiful song just before they die, hence symbolizing an artist's last artistic expression or contribution before retirement or passing.

In literature, music, and other forms of art, a swan song often represents a poignant and reflective work that encapsulates the creator's journey, thoughts, and feelings. It can capture themes of legacy, closure, and reflection, embodying the culmination of the artist’s experiences and talents. For example, many renowned artists and writers have produced significant works at the end of their careers that encapsulate their life's work, marking them as profound swan songs. Thus, option B, "last work," accurately conveys the essence of this metaphor, distinguishing it from the other options which refer to various stages of an artist's career rather than their concluding piece.