Answer: Option C
Explanation:
The octave is verse that contains 8 lines, "octave" comes from the latin "octava", and means 8 parts.
While there may be different rhyme schemes for the octave, the most used is
A B B A A B B A, so the right answer is the option C.
An example of the first half of an octave written in ABBA ABBA is the segment:
"‘Not like the brazen giant of Greek fame,
With conquering limbs astride from land to land;
Here at our sea-washed, sunset gates shall stand
A mighty woman with a torch, whose flame"
written by Emma Lazarus.