//GetAllSurveys api/<controller>
//Purpose: Invokes 'GetAllSurveys()' method of SurveyRepo.cs that returns all the records of type 'survey' from the 'Survey' table
//Input: None
//Output: A list of answer records from the 'Survey' table
public IEnumerable <Activity> GetAllSurveys()
{
return(Survey1.GetAll());
}