Which of the following conditions would NOT increase the likelihood of fossilization?

High oxygen availability would not increase the likelihood of fossilization because oxygen can promote the rapid decomposition of organic material. When an organism dies, the presence of oxygen facilitates the activity of decomposers such as bacteria and fungi, which break down the tissues quickly and prevent them from being preserved. In contrast, conditions that lower oxygen levels, such as anoxic environments, are more conducive to fossilization as they slow down decomposition and increase the chances of preservation.

Cool temperatures can help slow down the decay process, aiding fossilization. Low light exposure is also beneficial as it can limit the growth of photosynthetic organisms that may otherwise contribute to the degradation of organic material. Rapid sediment accumulation protects remains from environmental factors and biological activity, enhancing preservation. Thus, all these conditions promote fossilization, while high oxygen availability does not.