Single Select questions are a great way to get feedback in situations where only one response from a pre-determined set of selections is desired. Examples are:

Demographics (education, gender, household size, etc.)
Ratings/Scale questions
Numerical values or ranges

Two Types of Single Select Questions

Single Select: This question type allows you to create an infinite number of answer choices to a specific question, with respondents choosing only one response.

Single Select Matrix: This question type is similar to the Single Select in that respondents may select only one answer choice. However, Single Select Matrix allows set-up for a single scale used for multiple attributes in a table.

Programming Steps

From the New Question dropdown menu, select Single Select.

Next, enter and update the following:

Question text and a label, if desired (labels are not shown to respondents but can be used for back-end reporting).
Select clip icon to attach an image or video, if desired.
Select checkbox if you want to make the question required (all have to answer it to go to the next survey screen).

Other options include:

Select checkbox if you want to make it a Matrix question (used for multiple attributes that have the same answer option scale)
You can select radio or dropdown for options to show answer choices.
Ranking is grayed out. It becomes available if the Matrix button is selected. For more details and programming tips on Ranking functionality, read here.
Switch type allows you to switch the question type from Single Select to Multiple Select.

Under "Choice," add the answer options. You may do this by typing in one at a time and choosing the + sign in the blue box to add others or simply press ENTER when done typing each choice. You may also choose BULK ADD to paste in a list of choices from another source. Again, labels can be added, if desired (labels are not shown to respondents but can be used for back-end reporting).
Select clip icon to attach an image or video, if desired.
Create Based-On Rule is a great advanced programming feature that allows you to show answer choices based on past member responses within this activity. For more details, read here.
A "none" option, a "don't know" option and/or an "other" option can be added. These options will automatically be shown at the end of the list – even when the list is randomized.
Adding "why" field will add an open-end text box underneath the options. Note, the "why" field is not required even if the overall question is set as a required question.
Choices can be randomized, if applicable to research needs.
Click FINISHED to save the question.

Example Set-up: Single Select

For example, the set-up for a required, randomized Single Select with answer options, including "none," "don’t know" and "other" listed in radio order is shown below: