The business meeting was more casual and not standard protocol, what was it like?\nOptions:\n- informal\n- nonstandard\n- colloquial\n- stanine\n- standard wing
Let’s work this out in a step by step way to be sure we have the right answer.
informal
The business meeting was like informal.

The business meeting that was more casual and not with a standard protocol, is likely to be informal.

.

So, the final answer is informal