Planning a survey involves 2 concurrent activities: one, Construction of the survey instrument and which is the second?

Planning a survey involves 2 concurrent activities: one, Construction

1.	Planning a survey involves 2 concurrent activities: one, Construction of the survey instrument and which is the second?
A.	Selection of the sample
B.	Selection of the survey mode
C.	Coding of variables
D.	Selection of the survey design
Answer» B. Selection of the survey mode