Read the following announcement and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 13 to 16.

HOW TO PROTECT THE ENVIRONMENT
1. Reduce, reuse, and recycle. Cutting down on what we throw away helps conserve natural resources and ___(1)___ pollution.
2. Choose sustainable. Support companies that use ___(2)___ methods and materials.
3. ___(3)___ energy- efficient appliances and light bulbs to reduce your electricity use.
4. Get involved. Participate in local clean-up events or join an environmental ___(4)___ to make a difference.