A picture is worth a thousand words – but when you set up a multiple choice or checkbox question, every picture you add as an option needs at least one word to label it.
We know that labels need to be chosen carefully in this situation, as you don't want to bias participants to choose a certain image based on the label you assigned it. Our recommendation: Use "code words" for the labels.
Need some suggestions? Check out these options:
Colors (red, brown, orange)
Phonetic alphabet (alpha, delta, zulu)
Shapes (square, circle, triangle)
Animals (dog, cat, moose)
Keyboard symbols (+, *, %)
Number your images (image 1, image 2, image 3)
Celestial objects (pollux, virgo, laniakea)
Directions (left, right, up, down)
Roman numerals (I, II, III, IV)