microorganisms can't break down plastics because...

I'm stuck between a) plastics are made from oil d) plastics don't occur in nature. Both of them are true, but I'm not sure which is the most true.

There are microorganisms that digest oil.

answer d is stupid, surely there are better answers.

Both statements are partially true, but the most accurate explanation is that plastics don't occur in nature. While it is true that plastics are made from oil, it is important to note that the process of converting oil into plastics involves synthetic manufacturing. Plastics are created by combining various chemicals and polymers through industrial processes, resulting in materials that do not naturally exist in the environment.

Microorganisms are capable of breaking down natural, organic materials through a process called biodegradation. However, since plastics are not naturally occurring substances, microorganisms have not developed the necessary enzymes and metabolic pathways to efficiently break them down. Plastics contain long chains of polymers that are highly resistant to microbial degradation. As a result, plastic waste accumulates in the environment and takes hundreds of years to decompose naturally, if at all.

So, the primary reason microorganisms can't break down plastics is that plastics don't occur in nature, and microorganisms have not evolved mechanisms to efficiently digest them.