Explanation
Brainstorming is a technique that involves generating a large number of ideas from a group of participants in a creative and spontaneous manner. The purpose of brainstorming is to explore different perspectives, stimulate innovation, and identify potential solutions. One of the rules for brainstorming is to allow any ideas for possible solutions, even if they are not in the defined area of interest. This rule encourages participants to think outside the box, avoid criticism or judgment, and build on each other's ideas. This rule can help to generate more diverse and original ideas, and to discover new opportunities or connections12 Option A is incorrect because creating a goal for the number of ideas the group should generate is not a rule for brainstorming. While having a goal can help to motivate and focus the group, it can also limit the creativity and quality of the ideas. The goal should be flexible and realistic, and not compromise the purpose of brainstorming3 Option C is incorrect because setting a time limit for the session is not a rule for brainstorming. While having a time limit can help to manage the session and avoid wasting time, it can also pressure the group and hinder the flow of ideas. The time limit should be appropriate and adjustable, and not interfere with the process of brainstorming4 Option D is incorrect because rating each idea that is generated is not a rule for brainstorming. Rating ideas is a part of the evaluation and selection process, which should be done after the brainstorming session. Rating ideas during the session can discourage the group and reduce the quantity and diversity of the ideas. The rule is to defer judgment and evaluation until all the ideas are generated12 References: Business Analysis Techniques - ECBA, CCBA, CBAP Endorsed, Section 7.1: Brainstorming; Certification of Capability in Business Analysis (CCBA®) - Simplilearn, Module 6: Elicitation and Collaboration, Lesson 6.2: Prepare for Elicitation; Business Analysis Body of Knowledge (BABOK® Guide), Section 10.1: Brainstorming, 10.1.3.2:
Time Limit; Doing Better Brainstorming: A Business Analyst's Guide.