Final answer:
The reason for Scott's expectation of a rise in Walkton's stock price is the anticipated substantial tax break from pending legislation, which would likely lead to an increased dividend.
Step-by-step explanation:
Scott's expectation of a rise in Walkton's stock price is primarily due to the pending legislation that is expected to provide Walkton Industries a substantial tax break. If the legislation is enacted, the company is likely to increase its dividend by US$1.50 a share due to the enhanced profitability resulting from the tax advantages. The statement from the US representative suggests that the chances of passing the tax bill are favorable despite concerns over the federal deficit. This potential increase in dividend is attractive to investors as it directly impacts the total return they can expect from the stock, which includes both dividends and capital gains.