I have posted this question few days ago but i still didn't understand cause the person that answered didn't go in details to explain the reason for his selections. Please help with a more detailed answer. Thank you

You are 25 years old and at your work place in their 401k they have given you three mutual funds to choose from to put your money for retirement. You have decided that you are going to only pick one fund to start your retirement program. (Fidelity Blue Chip Growth Fund, Fidelity Small Cap Enhanced Index Fund or Fidelity High Income Fund)

1. What fund type do you wish to invest in by talking about the fund you have chosen and its investments?

2. Explain your reasoning for your choice over the others.

3. What might the disadvantages of mutual funds be of the investment that you have chosen?