Start from the expected trace
The right format depends on what you want to collect, not only on the visual effect. Prepare the instruction, duration and what you will do with answers before adding the step.
For a group choice, use a vote or poll. For a check, prepare a quiz.
To collect wording, use an open question, idea wall or word cloud depending on the debrief you plan.
Place the activity after the material that provides context and before the discussion or correction.
Send a test answer to check the instruction, collection time and what will be projected.