Uber Eats is a food delivery app from Uber that is available seven days a week and most hours of the day or night. By downloading the Uber Eats app, users can identify menu items at local restaurants, place their orders, and be assured that an Uber driver will deliver the food to their location within a specified number of minutes. Uber Eats competes with other food delivery companies such as Takeout Express, Waitr, Grubhub, and Foodler, as well as the delivery services of restaurants themselves. In order to assess its competitiveness, Uber Eats wants to do a survey that measures customer satisfaction with Uber Eats and each of several competitors. Comment on the pros and cons of each of the following possible survey methods for the Uber Eats survey.

a. A telephone survey using the cell phone/text numbers of 1000 recent Uber Eats users

b. A mall intercept survey of recent Uber Eats users

c. An online survey broadcast via text message with the survey url to 1000 recent Uber Eats users

d. Placing a post-card sized survey with delivered food asking users to fill it out and drop it in the mail