please can you write me introduction on a research$-$based assignment analyzing the Corporate Governance and Sustainability Report of a top $200$ AGX listed company from the Australian Stock Exchange i$.$e Rio Tinto company. The objective is to critically evaluate the company's governance mechanisms and sustainability activities during and after the COVID$-19$ pandemic.

Could you please assist me by drafting an introduction for this assignment? The introduction should set the context by discussing how the selected company has managed its corporate governance and sustainability strategies in response to the challenges brought about by the COVID$-19$ pandemic. This should include insights from their latest $(2023)$ reports or their $2023$ annual report if specific governance and sustainability reports are not available.

I would greatly appreciate your expertise in framing this introduction to capture the significance and implications of the company's responses to these critical issues.