The poem "ode to the west wind" Consists of five sections or what we call "cantos". written in Terza rima (an interlocking three-line scheme). Each of the sections consist of four tercets( set or group of three lines of verses that rhyme together).....(ABA,BCB,CDC,DED). And a rhyming couplet (EE) the poem is written in iambic pentameter(a line or verse with five metrical feet).
Sam and Eric are twins. Though they are two individuals, they are identified as one with the nickname "Samneric".
Their companions can't tell them apart so instead of using their names, their friends combined their names and used it to address any one of the twins.
Samneric do things together. They think alike. Basically, they are identical in all ways from physical appearance to their characters.
I would say, it’s b, ‘what rewards will I get from using this source’