Answer:
The essential topics related to the selection of participants for a health research are: 1) whether to work with samples or include the whole reference population in the study (census); 2) the sample basis; 3) the sampling process and 4) the potential effects nonrespondents might have on study results.
Explanation:
1. Who is the secretary in basak mandaue city?
2. Who is the treasurer in basak mandaue city?
