Which of the following performs RNA splicing in eukaryotic cellis?

A) RNA polymerase

B) spliceosome

C) helicase

D) promoter sequence

E) none of the above

B) spliceosome is a correct answer.

Explanation:

spliceosome performs RNA splicing in eukaryotic cellis.

The spliceosome is the molecular machine, which is present inside the nucleus of the eukaryotic.

spliceosome removes the noncoding region called as intron from the pre-mRNA transcript.

Introns are present in the eukaryotic genes, these introns are removed by the splicesome and the process is called splicing, it results in the formation mRNA through which protein is generated.

Thus correct answer is spliceosome: performs RNA splicing in eukaryotic cell.