In recent years,response rates for random digit dial surveys have been

A) declining steadily and now average only 67 percent.
B) declining steadily and now average less than 15 percent.
C) increasing steadily and now average 75 percent.
D) increasing steadily and now average 95 percent.

Following the crash of 1929,approximately ________ of the workforce immediately
Became unemployed.

A) 5 percent
B) 20 percent
C) 40 percent
D) 60 percent