Which of the following is used as Green solvent?

Step-by-step solution

Green solvents are environmentally benign substances that minimize ecological impact and health hazards by being non-toxic, non-flammable, and recyclable or biodegradable. Among the options, only supercritical CO ₂ qualifies as a green solvent. It is non-toxic, non-flammable, inexpensive, and widely available. Its properties are tunable with temperature and pressure adjustments, making it versatile for applications like extraction and reactions. It leaves no toxic residue and separates easily from products via depr