The correct answer is the following: option d. The concept of "blank verse" is defined as an unrhymed verse written in iambic pentameter. This means that the verse has no rhyme but has lines with feet that are iambic. An iambic foot consists of words of two syllables, one of them being unstressed and followed by a stressed one. A blank verse has 10 syllables in each line, which makes a pentameter. In the pentameter, 5 syllables are stressed but do not rhyme