Step 1: Understand the clue:
The question names a French factory and its founder, Oberkampf.
Christophe-Philippe Oberkampf started a printed cotton factory at Jouy-en-Josas near Versailles in 1760.
Step 2: Name the fabric:
The factory made scenic prints in one colour (red, blue or black) on a white or cream ground.
These showed pastoral scenes, people and country life.
The fabric came to be known as Toile de Jouy, which means "cloth from Jouy".
Step 3: Why the other options are wrong:
Geometric prints use shapes such as squares, circles and stripes. They are not linked to Oberkampf.
Animal prints copy the skin or fur patterns of animals.
Block printing is a method of printing, not a named fabric from one factory.
Final Answer:
The famous fabrics from Oberkampf's French factory are Toile de Jouy, option (A).