Answer: (C) In a respectful atmosphere
Step-by-step explanation:
Brainstorming is the name given to a situation when a group of people meets and generates many new ideas around a specific area of their interest. It's used to collect many ideas and solutions to a specific question. In this process everyone gives their ideas freely. It is effective when atmosphere is respectful.
It can be made more effective by setting a time limit, involving more creative minds but always a respectfull environment makes the participant think more freely.