Answer:
A
Step-by-step explanation:
The efficient market hypothesis posits that market prices contains all information in the market. As a result, an investor cannot consistently expect to outperform the market or consistently generate a positive alpha.
The efficient market hypothesis thus suggests a passive form of investment.
Forms of the efficient market hypothesis
a. the weak form - market prices contain information about past market prices. thus there is no need for technical analysis
b. the semi strong - it posits that market prices consists of all publicly available information
c. the strong form - it submits that market prices reflects both publicly and privately available information. As a result, excess returns cannot be earned consistently through insider trading