economic growth trends based on historical rates of growth for Countries X and Y (both developed markets) 。

问题如下：

Neshie Wakuluk is an investment strategist. She determines whether any adjustments need to be made to her initial estimates of the respective aggregate economic growth trends based on historical rates of growth for Countries X and Y (both developed markets) and Country Z (a developing market). Wakuluk is most likely to make significant adjustments to her estimate of the future growth trend for which of the following countries?

选项：

Country Y only

Country Z only

Countries Y and Z

解释：

B is correct.

Country Z is a developing market. Less-developed markets are likely to be undergoing more rapid structural changes, which may require the analyst to make more significant adjustments relative to past trends.

解析：本题中提到Z国是一个发展中市场。欠发达市场可能会经历更迅速的结构性变化，这就要求分析师相对于过去的趋势做出更重大的调整。所以本题只有B是正确。