B) chronological.
The reason is because she wants to state her speech based on her childhood through how she is doing now. So, in other words beginning to the end. Start to end.
The answer is "<span>concrete operational thinking".
The concrete operational stage starts around age seven and proceeds until roughly age eleven. Amid this time, kids pick up a superior comprehension of mental activities. Youngsters start considering solid occasions however experience issues understanding unique or theoretical ideas.
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Korean War, 1950
U2 Crisis, may 1960
Bay of Pigs, 1961
Marshall Plan and Truman Doctrine,1947
Cuban Missile Crisis, 1962
Bonds are considered very low risk for the very simple reason that they are backed by the power of the credit of the United States.
So, the only REAL risk for investors is that the United States default on its debts, that is, that they don't pay their debts. This could happen if all foreign owned debts are called in at once.