Answer:
opinion sampling.
Step-by-step explanation:
Opinion sampling is also called opinion poll and involves getting feedback from a sample of the target population where they give their opinions on a particular subject matter.
This is important to get candid feedback on a matter of interest, and can be used to improve processes.
In this instance Jane wanted to gauge consumer response about how Paul's Taco, a fast food restaurant, handled a recent food-poisoning outbreak. She talked to people on the street to get their reaction to the recent incident.