Final answer:
The Nominal Group Technique and brainstorming are techniques used to encourage group creativity by generating multiple ideas and combining related ones.
Step-by-step explanation:
The Nominal Group Technique and brainstorming are techniques used to encourage group creativity. In brainstorming, participants generate multiple ideas quickly and informally, without worrying about feasibility. The goal is to generate as many ideas as possible and combine related ones. The Nominal Group Technique, on the other hand, involves structured individual idea generation followed by a group discussion to prioritize and select the best ideas.
Hence, the correct answer is
option b) Group creativity
.