please help me answer this question about population and variable of interest

bi A researcher is interested to know the awareness level towards Covid-19 among residents in a particular town. The town has two major districts which are District A and District B. There are 1'00 residents in District A and 350 residents in District B. A random sample of 400 residents will be selected for this study to get their feedbacks. Due to Movement Control Order {MOO} the data will be selected with non-face-to-faoe interview. i] State the population and sampling frame for the above study. (2 marks) ii) Identify the variable of interest for the above study and determine its level of measurement. (2 marks) ill} Suggest the most suitable sampling technique to be used by the researcher and give your reason by suggested so. (2 marks) iv) In your opinion, state TWO (2} reasons that stport the researcher to collect the data using non-tace-tc-tace intenriew. (2 marks)