The basic demerit of sample investigation is that it
A. is less costly
B. is less time consuming
C. is less reliable because it creates many sources or unanticipated errors
D. Possesses the merit of flexibility
Answer:C
The basic demerit of sample investigation is that it
A. is less costly B. is less time consuming C. is less reliable because it creates many sources or unanticipated errors D. Possesses the merit of flexibility