new tax codes and stock, accounting homework help

It is mid-December and you run into a friend during your holiday shopping. He
states that he has been successful this year in the stock market but is worried
about the constant changes in the tax laws – particularly with the changes that
may be new for the following year. What advice would you give someone, such as
your friend from this scenario, based solely on the material in the text
regarding his options for the sale of the stock. Discuss the potential tax
consequences that could result by deferring the sale of stock into a different
tax year. Be specific with your recommendations