Deliver in 10hrs

Part 1:

Discuss in general terms how age, income, debt level, assets, marital and parental status, risk tolerance, time horizon, and general economic conditions should be taken into consideration when constructing an investment portfolio. Why is it important to have a diversified portfolio? 

Part 2:

How does the Efficient Market Hypotheses fit in with a diversified portfolio? If the efficient market hypothesis is true, why is it still important to study stock fundamentals closely before purchasing any stock?