Cell phones pose a threat to public opinion research because ...

[fnuegbu]

Cell phones pose a threat to public opinion research because
 
  a. the majority of households with residents over age 65 do not use them.
   b. they do not accept toll-free calls from research firms.
   c. almost 40 of households no longer have landlines.
  d. most cell phone users won't answer a number they don't recognize.

Question 2

Which of the following presents the greatest challenge to modern opinion research?
 
  a. Population mobility
   b. Increased diversity
  c. Availability of the Internet
   d. A shift in telephone ownership and usage

[bigsis44]

Answer to Question 1

c

Answer to Question 2

d

[fnuegbu]

Gracias!

[hramirez205]

Excellent