Dante's "Divine Comedy" is written in

blank verse

sonnet form

terza rima

iambic pentameter

C). Terza rima.

Explanation:

Dante's "Divine Comedy" is written in terza rima (rhyming verse first employed by Dante himself). It is demonstrated as the Italian verse form comprising of an alignment of triplets. It includes three-line stanzas (tercets) with an engaging rhyme scheme of ABA BCB CDC where the first line rhymes with the third one in each tercet and often employing iambic pentameter.

Dante's "Divine Comedy" was the first one to use this form. It is often said that Dante was influenced by Boccaccio and Petrarch (whom he greatly admired) to create this form to unify the outcome of form. Thus, option C is the correct answer.