Step 1: Understanding the Concept
Green chemistry aims to replace toxic chlorinated solvents with environment friendly ones.
Step 2: Analyse the Options
\(\text{CH}_{2}\text{Cl}_{2}\), \(\text{CHCl}_{3}\) and \(\text{CCl}_{4}\) are toxic chlorinated solvents that harm the environment.
Step 3: Compare the options
Supercritical \(\text{CO}_{2}\) is non-toxic, non-flammable and recyclable, so it is a green solvent. This is option (C).
Final Answer:
Supercritical carbon dioxide is the green solvent.
\[ \boxed{\text{(C) }\text{Super critical }\text{CO}_{2}} \]