Judy Is Interested in Whether a Local Newspaper Tends to Have

Multiple Choice

Judy is interested in whether a local newspaper tends to have a conservative or liberal constituency of readers. She randomly selects letters to the editor from the paper's op-ed section and then codes the letters based on whether they express conservative or liberal ideas. Judy is trying to answer her question by doing a(n)

A) field experiment.
B) ethnography.
C) laboratory experiment.
D) content analysis.