Right now the text inside choice boxes is directly tied to the step name used as the selection. So if you want a choice button to read "apple" or "banana" you'd have to have steps in your scene with those exact names.

However, in larger scenes with many options this may become tricky since we generally want the choice buttons to describe the expected outcome. For instance we see plenty of interactions use choice buttons with simply the word "next" to transition to the next step. No real issues for those watching the scenes but for the creator managing 10-20 steps with identical step names becomes quite challenging.

My suggestion is to simply allow each choice textbox to have a separate field for what text to use. If nothing is set it's still fine to use the step names but for those that enjoy making larger scenes it would help with organising scenes and connecting choices between them without affecting the viewer.