While passing the “State Machins in Studio” test, in question 8/8, “Which activity can be used to process every item in a collection individually”, a sub-message displays the text “Choose all of the options that apply”, yet the control to choose the answer is a RADIO BUTTON, which only allows ONE SINGLE choice.
If there’s only one valid answer, the message shouldn’t be displayed, or if there’s more than one right answer, then multiple CHECKBOXES should be used instead. This adds further confusion to the user as he doesn’t know if it’s replying properly.