With a Preference (Likert) question, you provide a statement and request a level of agreement, frequency, importance, likelihood and so on. Use this type of question to survey the visitor's opinion. You can specify the number of choices for the preference question, and can provide a "No Opinion" response as a possibility.
Preferences or Likert questions allow you to ask a question and let the visitor respond within an answer range.
You can group a sequential preference questions together. Many surveys use this layout when the Minimum Preference and Maximum Preference choices are the same for a group of questions.