A Political Party Sends a Mail Survey to 1500 Randomly

Multiple Choice

A political party sends a mail survey to 1500 randomly selected registered voters in a community. The survey asks respondents to give an opinion about the job performance of the current president. Of the 1500 surveys sent out, 480 are returned, and of these, only 120 show that the respondent is satisfied with the president's job performance. The sample is:

A) the 1500 randomly selected voters who received the questionnaire.
B) the 480 surveys returned.
C) the 120 voters surveyed who are satisfied with the president's job performance.
D) the voters in the president's district.