Answer:
The company is using callbacks.
Explanation:
Callbacks are a survey technique particular of surveys carried out by phone. They are very common in this kind of survey because less than half of the interviews take place during the first call, whether for respondent's unavainability at the time of the survey, or low interest for completing the survey at that time. Maybe the person in question prefers to be interviewed in the future.
Answer:
Natural, human made and human resources
Explanation:
Natural Resource: Resources which are obtained from nature are called natural resources. Some of the natural resources can be used directly, while for using some others we need the help of some technologies
Answer:
They worked to free the serfs
Explanation: They worked to free medieval laborers (aka) slaves
Hope this helps <3