Answer:
C. II and IV
Step-by-step explanation:
Since the investor is aimed at maintaining his freedom to adjust the portfolio but also want to keep transactions cost, tax, risk, etc low, the investor will have to use a strategic asset allocation strategy or a rebalancing strategy.
This strategies helps to balance investments and allow investor flexibility. Unlike the other strategies in I and III, I has high risks involved as well as requires a high capital which is not conforming with the mindset of the investor. III on the other hand, keeps transaction cost and tax low but gives no freedom to the investor. This also negates the aim of the investor.
Cheers.