Answer:
The true statement will be - D
It is a involvement of groups of transcriptional regulators which work together to determine the expression of a gene.
Explanation:
Combinatorial gene regulation is a mechanism by which small numbers or groups of transcriptional factors or regulators can control the expression of a much larger gene with temporal and spatial patterns.
The process by which a cell regulates the conversion of DNA to RNA to increase gene activity is known as Transcriptional regulation. A single gene can be regulated by altering the RNA which is transcribed.
The gene control allows the cell to respond to a variety of intracellular and extracellular signals.