Gareth was woken up from his sleep by a cold call from an interviewer. Since the subject of the survey was of Gareth's interest, Gareth entertained the caller even though he was sleepy. As a result, Gareth answered some questions without really paying attention. Which type of data collection error is evident here?
a. Cheating
b. Attention loss
c. Misunderstanding
d. Distraction
e. Nonresponse
Answer: b. Attention loss