问题如下：
1. Based on the information in Exhibit 1, the expected return for Portfolio 1 is closest to:
选项：
A.2.58%.
B.3.42%.
C.6.00%.
解释：
A is correct.
When using a macroeconomic factor, the expected return is the intercept (when all model factors take on a value of zero). The intercept coefficient for Portfolio 1 in Exhibit 1 is 2.58
考点：macroeconomic factor model
解析：宏观经济因子模型的expected return就是它的截距项。根据表格，Portfolio 1的截距为2.58，所以expected return=2.58%
INTERCEPT是啥
