Indeed, the importance of a firm's intangibles has increased, thereby decreasing the importance of the firm's book value as part of the firm's total stock market valuation.
Thus, the correct option is A. decreased.
The current value measurement tools include the balanced-scorecard and the Triple bottom line measures.
The balanced-scorecard measures a firm's performance by linking it to the following factors:
The triple bottom line measure accesses an organization's performance based on its ability to achieve human sustainability and work-life balance. The triple bottom line concentrates on people (social responsibility), profit (economic value), and planet performances (environmental impact).
Thus, the increased importance placed on the firm's intangibles has reduced or decreased the importance placed on the book value in stock market valuation because the valuation emphasis has shifted to using the balanced-scorecard and the Triple bottom line measures.
Learn more about the triple bottom line at https://brainly.com/question/5617781
