Which sentence most clearly states the main idea of the second paragraph of ms. jackson's cover letter?
after graduating at the top of my class at quantico, i promptly demonstrated excellent ability by solving my first assignment within a matter of days.[a] although the case had been open for almost six months, information i derived by scrutinizing the financial records of the key suspects led to their immediate arrest and conviction.[b] since then, my record has improved.[c] as assistant director walter schmidt will attest, i have demonstrated the commitment, ability, and expertise of a special agent well beyond the expectations my relatively short experience would normally incur.[d]
a
b
c
d