What statistical method will i use if i have a multiple responses and i want to rank them?

My research is about commonly used Electronic Fund Transfer in our Campus as perceived by MSU students. There are 6 available EFT in our Campus that students are using. My instructor said that i must used other statistical method 'coz i have so many EFT. I must also rank it but i don't know what statistical method to use....thanks for the help...