please answer the question within 30 minutes. make sure the explanation and reasons are explained in very detailed manner , Attempt the answer only if your are 100% sure that its correct. else leave it for other tutor otherwise i will give negative ratings and will also report your answer for unprofessionalism. Make sure the answer is 100% correct and is not copied from anywhere.

Marketing researchers shy away from overreliance on any one method for marketing. They also recognize the value of using two or three methods to increase confidence in the results. In determining the demand for your product/service what are three methods you can use to provide evidence of demand and what are your reasons for choosing these methods