Communication can be verbal or non-verbal, and writing is one of the main forms of non-verbal communication.
When students express their feelings, thoughts, or ideas through words on paper, they are engaged in writing.
Writing allows them to organize their ideas, share information, and communicate clearly without speaking.
Listening and speaking are verbal skills, while shouting is an informal vocal expression and not a recognized communication method in academics.
Therefore, the correct answer is Writing, which is a structured and effective way for students to communicate ideas on paper.