Final answer:
The Australian Securities and Investments Commission (ASIC) is the regulator that provides guidance on corporate governance in Australia. It is responsible for enforcing company and financial services laws to protect Australian consumers, investors, and creditors.
Step-by-step explanation:
The regulator that provides regulatory guidance on various aspects of corporate governance in Australia is the Australian Securities and Investments Commission (ASIC). It is ASIC's responsibility to oversee companies, enforce and regulate company and financial services laws to protect Australian consumers, investors, and creditors. ASIC works to ensure that companies are properly governed to safeguard the integrity of the market. While the Australian Prudential Regulation Authority (APRA) focuses on the prudential oversight of financial institutions and the Reserve Bank of Australia (RBA) focuses on monetary policy and financial stability, and the Australian Competition and Consumer Commission (ACCC) focuses on consumer protection and fair trade, it is ASIC that specifically guides and monitors corporate governance practices. Corporate governance is critical to ensure transparency and trust in the corporate environment, as exemplified by the failure in the case of Lehman Brothers, where accurate financial information was not provided to investors.