Answer:
(A) Successive price changes are independent of each other
Step-by-step explanation:
Random walk theory claims that past information and trends cannot be used to predict future price movement of the stocks since as per the theory, stock price movements are unpredictable and walk(move) randomly.
The theory further suggests that stock prices have same distribution and are independent of one another. It means there is no correlation between price movements of two different stocks.
Thus, Stock prices follow a random walk implies that successive price changes are independent of each other.