Final answer:
The Scope group in the Search Tool Search tab allows you to define the subject and grade level of a question to narrow down your search results.
Step-by-step explanation:
The Scope group in the Search Tool Search tab allows you to define the subject and grade of a question. By selecting the appropriate subject, you can narrow down your search results to find questions related to specific academic areas such as Mathematics, History, English, Biology, Chemistry, Physics, and more. Additionally, by choosing the grade level, you can filter the questions based on the educational level they are intended for, such as Middle School, High School, or College.