Answer:
Will should improve on his language communication & presentation skills.
Step-by-step explanation:
Group Discussion is a discussion among a group of people, related to a certain topic. Good tips for participation in a Group discussion are : Be confident, relevant towards topic, courteous towards others, use good & clear language to communicate.
Will is knowledgeable, acknowledges other viewpoints, and answers questions fully. So, he is relevant, courteous & confident. However, he uses many slang terms and idioms when he speak. As slangs, idioms, technical jargons are sometimes cumbersome to understand & interpret. So, he should improve his communication & presentation skills - to make points more clear, concrete & understandable.