Which of the following types of RNA is involved in the regulation of gene expression by binding to specific messenger RNA molecules?

A Transfer RNA (tRNA)
B Ribosomal RNA (rRNA)
C MicroRNA (miRNA) ✓
D Small nuclear RNA (snRNA)

Explanation

MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression post-transcriptionally by binding to complementary sequences on target messenger RNA (mRNA) molecules, leading to their degradation or repression of translation.

Source

Molecular biology and genetics textbooks such as Alberts Molecular Biology of the Cell
Fundamentals of Biochemistry Biochemistry Gene Regulation and Expression Hard MEDICAL Confidence: high