Answer:
The correct answer is option C. an octave followed by a sestet.
Step-by-step explanation:
An Italian sonnet is made up of an octave rhyming followd by a sestet rhyming.
Its alternative name is Petrarchan sonnet. The structure consists of a poem with 14 lines divided into two parts, where the first is the octave rhyming (ABBAABBA) and the second is the sestet rhyming (where the scheme is more flexible).
Given this information we can say that the correct answer is the option C. an octave followed by a sestet.