HELP FAST PLEASE!!!!!!
Are the following examples of random samples? Why or why not?
a .Asking people in an ice cream shop, if they like ice cream.
b. Surveying middle school students on what their favorite high school course is.
c. Completing a survey on whether people like shopping at Publix in front of Publix.
d. Walking around to you neighbors to ask whether the new community center should get a pool or a tennis court.