I think it is (A.)Task Forces for this question.
Answer:
C. Irish and German immigration rates were similar over the two periods
Explanation:
correct on edge
This statement is true - a compound subject is indeed one that contains two or more simple subjects.
Answer:
B is correct
Explanation:
The results of one's actions are not always immediately seen, and change happens in small increments.
The teacher was unhappy that the students did not seem to have improved lives in the short term, but when a former student comes back and says how his life was made better, the teacher realized that he did help the student after all.