The CZUSD/BUSD stable LP farm does not have any risk. Since CZUSD and BUSD are always both equal to $1, it is not possible for the capital to decrease in value. In fact, it will slowly increase in value as the LP collects trading fees. On top of those trading rewards are the CZF rewards. If you are looking for high yield with low risk, choose the CZUSD/BUSD farm.