Concept:
The four-part garden concept is known as the Charbagh layout. It is a traditional garden design based on geometric division and symbolism.
Explanation:
The Mughal Garden is based on the Charbagh concept, where the garden is divided into four equal quadrants.
These divisions are usually separated by water channels or pathways.
The design symbolizes the four rivers of paradise described in Islamic tradition.
Chinese and Japanese gardens emphasize natural, asymmetrical layouts.
French gardens focus on axial symmetry and grand vistas, not four-part division.
Hence, the garden style that gives importance to the four-part garden concept is the Mughal Garden.
Final Answer: \(\boxed{\text{Mughal Garden}}\)