What is Image selection option in post survey?

A question where images can be given as an option. Steps on how to use the image selection option: 

1. Select the option of image selection from the drop-down of post-survey as shown below: 

4. Choose one image for each option to be inserted, as shown in the screenshot: 

5. After inserting the images, change the name appearing for the options. 

6. You can select the number of images appearing image choice type as shown below: