Describe the Sarbanes-Oxley Act, and explain which section(s) you find to be the most important.
While most of the Sarbanes-Oxley Act contains detailed accounting and finance provisions, the most important section is 406 and the requirement-
"Companies must comply with the code of ethics disclosure requirements promulgated under Section 406 of the Sarbanes-Oxley Act in their annual reports for fiscal years ending on or after July 15, 2003. They also must comply with the requirements regarding disclosure of amendments to, and waivers from, their ethics codes on or after the date on which they file their first annual report in which the code of ethics disclosure is required."
More specifically --
The SEC has defined the term 'code of ethics' to mean written standards that are reasonably designed to deter wrongdoing and to promote:
honest and ethical conduct, including the ...
The Act contains Sections describing requirements for compliance. Section 406 and its requirement for ethics is the most important since adherence to it will increase the likelihood that the other Sections will be accurately reported.