Final answer:
The least amount of smoke when burning would be produced by dry wood due to its capacity to burn cleaner than plastics, rubber, or paper.
Step-by-step explanation:
The option that would produce the least amount of smoke when burning is A) Dry wood. When burned, dry wood releases fewer pollutants than plastics, rubber, or even paper. The smoke from burning wood commonly contains carbon monoxide and particulate matter, but it is relatively less compared to the other options listed. Plastics and rubber release a wide array of harmful chemicals, as they often contain a mix of different compounds. Additionally, burning rubber can produce a significantly noticeable amount of smoke due to its composition. On the other hand, paper combusts very quickly due to its low activation energy once ignited, and thus can produce a burst of smoke and flames. Therefore, while not completely smoke-free, burning dry wood, especially with modern stoves designed to minimize emissions, would be the option producing the least smoke.