The correct answer is C. Blank verse
Step-by-step explanation:
In poetry, the way a verse or line is constructed especially in terms of the number of syllables, whether these are stressed or unstressed and the rhythm and rhyme provided by different structures is called the meter. This meter varies according to the poet and language in which a poem is written in the case of English one of the most common meter is the iambic pentameter which is the combination of five feet each one composed by a stressed syllable and an unstressed syllable. Additionally, this combination usually has a specific rhyme scheme that is part of the iambic pentameter structure. However, if there is an iambic pentameter without rhyme (repetition of same or similar sounds) the name provided to it is blank verse, which means the verses still have the same structure but there is no rhyme. Thus, the lines of iambic pentameter that contain no form of rhyme (repetition of sounds) are called blank verse.