What does the term "alexandrine" refer to in poetry?

The term "alexandrine" refers specifically to a type of poetic meter that consists of twelve syllables, often divided into two equal halves of six syllables each. This meter is traditionally used in French poetry and is characterized by its rhythmic structure, typically employing a regular pattern of stressed and unstressed syllables. Alexandrines can be found in various poetic forms and have been utilized by many poets to create a flowing and melodic quality in their works.

Other forms of poetry mentioned in the options do not align with the definition of alexandrine. Rhymed verses with six lines, strophic structures, and unrhymed verse forms pertain to different characteristics and types of poetry, each with its unique features and formats that do not match the specific meter of the alexandrine. Thus, recognizing the significance of the twelve-syllable structure helps clarify why this term is distinctly connected to a specific metric form in poetry.