I think it would be A. natural selection
Answer: Hydrosphere causes erosion of geosphere through running water and precipitation. Biosphere breaks down rock of the geosphere (plant roots), but when it comes to soil, minerals of the geosphere feed the plants. Biosphere and atmosphere interact through animal and plant respiration of oxygen and carbon dioxide.
Explanation: Hoped i Helped!
Mutation is defined as the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.
So if mutation destroys the ability of a poly(a) binding protein to attach a poly(a) tail, mRNA would degrade hence disrupt the regulation of mRNA regulation.