The correct option is C Hybridisation of DNA
Genetic engineering
The modification of the genetic material (RNA or DNA) of organisms to use them to produce commercially important substances is called genetic engineering.
Artificial gene synthesis
The in vitro synthesis of genes using nucleotides done in the lab is called artificial gene synthesis.
Hybridisation of DNA
One of the main steps in genetic engineering is the formation of recombinant DNA, that is made up of vector DNA and DNA of interest. This is called hybridization of DNA.
Prosthesis
A device used to replace a missing body part or to make body part work better is called prosthesis. For example, artificial limbs.
Fermentation
Fermentation refers to a metabolic process by which yeast converts sugar to ethanol in alcohol production. Yeast need not be genetically modified to be used in this process.
Final answer
(B) Hybridisation of DNA