According to the rules of subject-verb agreement, phrases or clauses between the subject and the verb do not change the NUMBER
I found one study online that test FEV 200-1200 in Lybian men. What they found is that FEV 200-1200 is negatively correlated with age and positively correlated with standing height. They indicate that FEV 200-1200 for this age group is 3.88, but the average height of their participants is a bit lower than 6 feet 1 in.
Link to the study (http://thorax.bmj.com/content/thoraxjnl/43/11/923.full.pdf )
I found another study that test FEV in Indian their results are much higher than those in the previous study. Link to the study(https://pdfs.semanticscholar.org/4675/0b220f0ac39a78bd2aa0851f27496b0e288e.pdf).
I think the answer should be C.
In Julius Caesar, Shakespeare treats the theme of power with great complexity. He examines the desire to acquire power, but he also examines the vulnerability and political instability which can accompany its pursuit.
