It took welfare programs a long time to gain a foothold in the U.S. due to the fast growth of___. A. industrialization B. modernization C. urbanization D. population

Đáp án A

Giải thích: Trong câu “several European nations instituted public-welfare programs. But such a movement was slow to take hold in the United States because the rapid pace of industrialization” từ fast growth cùng nghĩa với từ rapid pace. Vậy dáp án A là đáp án đúng.