The correct answer is: C. Surveys
A survey is a method of collecting data by asking a series of questions to a group of people. Surveys can be conducted in person, over the phone, or online. The questions in a survey are designed to gather information about the respondents’ opinions, attitudes, or behaviors.
Observation is a method of collecting data by watching people or events. Observers may be hidden or visible, and they may or may not participate in the activity they are observing. Observation can be used to gather information about people’s behavior, interactions, and environment.
An experiment is a method of collecting data by manipulating one or more variables and observing the effect of the manipulation on another variable. Experiments are often conducted in a laboratory setting, but they can also be conducted in the field. Experiments are used to test hypotheses about cause and effect.
An interview is a method of collecting data by asking questions to a person or group of people. Interviews can be conducted in person, over the phone, or online. The questions in an interview are designed to gather information about the interviewee’s experiences, opinions, or knowledge.