Step 1: Historical context of the Great Depression.
The period between 1929 and 1933 marks the Great Depression, a severe worldwide economic downturn. During this time, unemployment in the United States was at an all-time high, with large numbers of Americans being without work.
Step 2: Analyzing the options.
(A) Second: This is incorrect because it was not just every second person who was unemployed.
(B) Third: Correct. During the Great Depression, it was estimated that one out of every three Americans was unemployed.
(C) Fourth: This option is incorrect because unemployment was far more widespread than this.
(D) Fifth: This is also incorrect as unemployment was higher than this rate.
Step 3: Conclusion.
The correct answer is (B) Third, as during the Great Depression, approximately one in every three Americans was unemployed.