Which of the following actions will help to reduce pollution? 1. Composting kitchen and garden waste 2. Using unleaded petrol in cars 3. Spraying pesticides on plants to kill pests 4. Littering chocolates and biscuits wrappers

• A.  1 and 2           
• B.  3 and 4
• C.       1, 2 and 3        
• D.       1, 2 and 4