for item number 11 to 15, choose your answer from the options inside the box.
A . experimental Method
B.interview Method
C.observation method
D.survey Method

11.A researcher used written questions that is either delivered or emailed to the respondents. what data collection method is used?
12what is the data collection method where the subjects' behavior or characteristics are being observe in their natural environment?
13 what the data collection method is prone to mistake? for example, the respondents are not able to recall information.
14 what method is used when a researcher asked direct questions from his respondents face to face, via phone call or video call?
15.which data collection method uses the human senses to gather information​