Final answer:
In identifying formal and informal discussions, formal discussions use standard grammar, follow specific procedures, and require preparation. Informal discussions can drift from topic to topic, use casual language, and can include slang.
Step-by-step explanation:
In distinguishing between a formal discussion and an informal discussion, it is crucial to understand the language and organizational patterns associated with each. A formal discussion typically uses standard grammar, follows specific procedures, and requires preparation. These discussions often occur in professional or academic settings where a structured approach to communication is necessary. On the other hand, an informal discussion might can drift from topic to topic, uses casual language, and can use slang. Informal discussions are characterized by a relaxed tone and spontaneous structure, often occurring among friends or in casual settings.
Now, sorting the given phrases into the appropriate categories:
Formal Discussion:
uses standard grammar
follows specific procedures
requires preparation
Informal Discussion:
can drift from topic to topic
uses casual language
can use slang