The term ribosome is applicable to the following molecule in bacteria:

23S rRNA

The correct answer is Option (2) -23S rRNA

Ribosomes are cellular structures responsible for protein synthesis, and they consist of both ribosomal RNA (rRNA) and protein components. In bacteria, the larger subunit of the ribosome contains 23S rRNA and 5S rRNA, among other components. In eukaryotes, the larger subunit of ribosome has 28S, 5.8S and 5S rRNA. Therefore, the term "ribosome" is most closely associated with 23S rRNA in bacteria.

mRNA is synthesised by transcription in both prokaryotes and eukaryotes.

hnRNA is the precursor of mRNA in eukaryotes.