Final answer:
The examples provided in the question of direct recruitment of decapping enzymes by trans factors in the 3' UTR and internal mRNA cleavage by endoribonucleases exposing cut ends to 5' → 3' and 3' → 5' exonucleolytic decay are examples of 5' to 3' Decay.
Step-by-step explanation:
The examples provided in the question of direct recruitment of decapping enzymes by trans factors in the 3' UTR and internal mRNA cleavage by endoribonucleases exposing cut ends to 5' → 3' and 3' → 5' exonucleolytic decay are examples of 5' to 3' Decay. This type of decay refers to the degradation of RNA from the 5' end to the 3' end. It involves the removal of the protective caps and subsequent decay of the RNA strand.