The three most important criteria for a good icebreaker are:
-
Short / Appropriate / Participative
-
Short / Random / Immediate
-
Lengthy / Less interactive / Random
-
All of the above
Good icebreakers must be SHORT (don't eat into presentation time), APPROPRIATE (relevant to topic/audience, not offensive), and PARTICIPATIVE (involve audience interaction). Random icebreakers lack focus; lengthy ones defeat the purpose; less interactive ones are just activities, not icebreakers.
"Short / Appropriate / Participative" is correct. A good icebreaker should be brief (respecting session time), appropriate to the audience and context (not offensive or off-topic), and participative (actively engaging attendees rather than being a passive listen). The other options invert these qualities (random, lengthy, less interactive) which undermine the icebreaker's purpose of warming up and engaging a group quickly.