Torrance just booked a flight from Vancouver to Cancn. As she was completing the purchase, the travel website offered her the option to buy a

Torrance just booked a flight from Vancouver to Cancún. As she was completing the purchase, the travel website offered her the option to buy a carbon offset (e.g., a donation to a project that reduces greenhouse gas emissions). Torrance had never heard of carbon offsets before that moment. After reading up on carbon offsets, she decided to purchase one to offset the emissions from her air travel. In this scenario, what type of product are carbon offsets?