Final answer:
The Council of Financial Regulators is composed of ASIC, APRA, and RBA, which makes Option 1 the correct answer.
Step-by-step explanation:
The three regulatory agencies that work alongside the Treasury to make up the Council of Financial Regulators are: the Australian Securities and Investments Commission (ASIC), the Australian Prudential Regulation Authority (APRA), and the Reserve Bank of Australia (RBA). Therefore, the correct option is Option 1: ASIC, APRA, RBA. Each of these entities plays a crucial role in supervising and regulating different aspects of the financial system in Australia.
Answer: Option 1: ASIC, APRA, RBA