Which of the following method will be followed where information are unavailable for research purpose?

A. Soil mapping

B. Soil classification

C. Survey

D. All of these

Answer: Option C

Solution(By Examveda Team)

The survey is the method that will be followed to gather information in the case where information is unavailable for research purposes.
The survey is a research method for collecting data from a predefined group of respondents to gain information and insights into various topics of interest.