RNA polymerase III is responsible for -

The correct answer is Option (2) → tRNA

Eukaryotes have three RNA polymerases in the nucleus, each with its own job. RNA polymerase I makes the rRNAs 28S, 18S and 5.8S. RNA polymerase II makes the precursor of mRNA, called hnRNA. RNA polymerase III makes tRNA, 5S rRNA and snRNAs.

(1) mRNA — Incorrect. mRNA comes from hnRNA, which is made by RNA polymerase II.

(2) tRNA — Correct. tRNA is transcribed by RNA polymerase III.

(3) 28S rRNAs — Incorrect. 28S rRNA is made by RNA polymerase I.

(4) 5.8S rRNA — Incorrect. 5.8S rRNA is also made by RNA polymerase I. Only the 5S rRNA comes from RNA polymerase III.

NCERT Extract:
Types of RNA and the Process of Transcription – “… There are at least three RNA polymerases in the nucleus (in addition to the RNA polymerase found in the organelles). There is a clear cut division of labour. The RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S), whereas the RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs). The RNA polymerase II transcribes precursor of mRNA, the heterogeneous nuclear RNA (hnRNA).”