The answer is (c.) argument and emotion
IF I can sing well enough, I'll join the school chorus.
The IF implies that something is conditional i.e. it may happen, it may not happen (it depends on whether you can sing well enough!)
Hope this helps... :)
Your answer is A I think :)
It is true that Sonnet 73 is written in iambic pentameter. All of Shakespeare's sonnets are written in iambic pentameters, which means that an unstressed syllable is followed by a stressed one (iambic), and that there are ten syllables in each line (pentameter - penta means 5, meter consists of two syllables).
