The assignment highlights the significance of project evaluation in business decision-making, emphasizing the use of the WACC method to determine discount rates. It explains how WACC is calculated by weighting cost of equity and debt with market capitalization and long-term loan amounts, then applying a tax rate. The discussion also notes limitations of the WACC method, such as its reliance on stable capital structures, and concludes that prudent use of this approach can lead to informed investment decisions in business.