That conqueredst alexandria by the right
of arms, and didest woe on heathens too,
thy very liegmen envied thee, and spite
(no other cause) against thy chivalrous might
moved them to murder thee upon the morrow
there, on thy bed! thus fortune with light
what is the rhyme scheme of these lines?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.