Final answer:
The formal structure in '103 Korean Martyrs' is exemplified by the consistent rhyme scheme in all stanzas.
Step-by-step explanation:
An example of formal structure in '103 Korean Martyrs' is option A: all of the stanzas follow the same rhyme scheme. This is a characteristic of formal poetry, where the pattern of rhyming words is consistent throughout the poem. In this case, all the stanzas in '103 Korean Martyrs' have the same rhyme scheme, which contributes to the overall formal structure of the poem.
Learn more about Formal structure in poetry