Answer:
a) transformation
Step-by-step explanation:
The recombinant DNA molecule produced is introduced into a host organism (such as a bacteria) and can then be replicated. This process is known as transformation, in which bacterial cells capture DNA from the external environment.
Host cells copy the vector DNA along with the DNA itself, creating multiple copies of the inserted DNA. Some examples of host cells are the bacteria Escherichia coli and Bacillus subtilis and the yeast Saccharomyces cerevisiae.