Answer:
D. A diverse portfolio is more likely to have a stock inside of it that performs amazingly well.
Step-by-step explanation:
Diversification of portfolio means adding different stocks / shares in investment portfolio.
Option D is correct because when we have different kind of stock, there are chances that if one fails to perform, one can outperform and it is likely to have a stock which can perform amazingly well.
Now we will see that why all the options are incorrect one by one.
option A is not true because it is not necessary that diverse portfolio cannot fail altogether. So it cannot be guaranteed that it will have higher return for sure.
Option B is not true as diverse portfolio cannot have lower volatility if all perform like same.
Option C is also incorrect as correlation is not necessary in diverse portfolio.