While Completing a Survey on Attitudes Toward House Ownership,John Was

Multiple Choice

While completing a survey on attitudes toward house ownership,John was hit by an attack of indigestion.Which of the following best accounts for the difference between John's and another respondent's scores?

A) A true difference in attitudes
B) A true difference in personality between john and bob
C) A difference due to temporary personal factors
D) A difference due to situational factors
E) A difference due to variations in administration.