Answer: By providing opportunity to promote further questioning and thinking.
Explanation: In discovery Science, the major thing we do is to think about what we are discovering, then ask questions which our discoveries will solve. Because the teacher has given a platform where each group should think about what they have discovered, and then share it with the rest of the class. Any member of the class has an opportunity to ask question, about what the group has discovered. This makes it a discovery Science, because thinking and questioning has been involved.