Which heading best completes the partial outline below? A. Causes of the Great. Depression
B. The Rise of the Labor Movement
C. The Gilded
Age
D. Effects of Monopolies and Trusts

One reason the stock market collapsed in October 1929 was that
A. Many stocks had been purchased on credit
B. The prices of most stocks were too low
C. Banks refused to loan money to purchase stocks throughout the 1920s
D. Many companies stopped selling shares of stock

please help me on both!!!