Answer:
Questionnaires : Interviews
Step-by-step explanation:
There are several methods of collecting data from suppliers, customers, or the government. Two of them are
1. Questionnaires
Questionnaires are documents that contain questions related to the subject of inquiry. The researchers formulate questions that, when answered with provide information that they are seeking. Questionnaires can be administered to the suppliers or customers by email, online or hard copies. They are among the most popular and oldest data collection techniques.
2. Interviews
In this method, a researcher engages a selected respondent on one-one conservation. They discuss the subject matter in detail. Interviews provide instant feedback and offer the interviewer a deeper understanding of the respondents' thought processes.