transcription/RNA processing:
a) snRNA
c) mRNA
e) pre-mRNA
2. translation
b) tRNA
f) rRNA
3. not used in protein synthesis
d) RNA primers
RNA plays important roles in many cellular processes, particularly those associated with protein synthesis: transcription, RNA processing, and translation.
Drag the labels to the appropriate bins to identify the step in protein synthesis where each type of RNA first plays a role. If an RNA does not play a role in protein synthesis, drag it to the "not used in protein synthesis" bin.
1. transcription/RNA processing
2. translation
3. not used in protein synthesis
a) snRNA
b) tRNA
c) mRNA
d) RNA primers
e) pre-mRNA
f) rRNA

Option-(E): The transcription/RNA processing happens for the development if the pre-mRNA (Messenger RNA which is also termed for carrying the blueprint for the production of proteins inside the living cells"
Option-(B):The translation occurs when the ribosomes receive the fragment or blue print of the sliced DNA from the nucleus which then makes the production of proteins more logical due to the presence of all the 20 types of amino acids inside the ribosomes of the animal cells.
The process of protein synthese involves the very specified pathway during which the the double stranded DNA molecules is sliced into and then that fragment of the genetic sequence is sent to the ribosomes via the mRNA(messenger RNA) from the nucleus towards the ribosomes (organelles responsible for the production of proteins). As, the amino acids are present there and the tRNA(transnational RNA)is present for the translation of the encrypted sequence present inside the mRNA.While, we can have the following option that are included during the process of protein synthesis, which are as follows:

Transcription/RNA processing, it involves the tRNA and the mRNA which provides the required blueprint to the ribosomes for its further analyses. The rRNA(ribosomal RNA) is also greatly involved in the over all decryption of the blue print that is sent for the creation of a new amino acid chain or protein.
Where the snRNA does play a vital role during the process but it has an involvement at a very basic or inital stage of the whole protein synthesis process.So, we can term it as "not used in protein synthesis".