In biotechnology, Hybridoma technique was developed by

The correct option is A George Cohler and C. Milstein

Edward Jenner :
Edward Jenner was a scientist who pioneered the use of vaccines and is credited for developing the first vaccine i.e. the smallpox vaccine.

Paul Ehrlich :
Paul Ehrlich gave warnings about the consequences of population growth and availability of limited resources.

George Cohler and C. Milstein :
George Cohler and C. Milstein developed the hybridoma technology. This technology involves the fusion of cancer cells with B lymphocytes. The resultant cell formed is called hybridoma that divides exponentially producing large amounts of identical antibodies called monoclonal antibodies. These antibodies are used for therapeutic and diagnostic purposes.

Antony Leeuwenhoek :
Antony Leeuwenhook is known as the father of microbiology.