The correct answer is 2. Brainstorming
Step-by-step explanation:
Brainstorming is one of the most common techniques used to generate ideas or obtain input in multiple situations, this includes finding a solution to a problematic situation, discussing a topic or issue, among others. This technique involves a group of people who provide ideas or key information; additionally, in most cases, participation is regulated by a facilitator. Besides this, ideas are listed because these are necessary during subsequent discussions or steps for solving a problem. According to this, the description given refers to brainstorming because it is this technique the one that implies a group discussing issues, problems, etc. to obtain input, information or ideas.