Which Treatment of Unsatisfactory Responses Is Desirable If (1)the Number

Multiple Choice

Which treatment of unsatisfactory responses is desirable if (1) the number of respondents with unsatisfactory responses is small; (2) the proportion of unsatisfactory responses for each of these respondents is small;or (3) the variables with unsatisfactory responses are not the key variables?

A) returning to the field to get better data
B) classifying and counting questionnaires accordingly
C) discarding unsatisfactory responses
D) assigning missing values