Concept:
Dhanraj Bhagat was an important modern Indian sculptor known for experimenting with:
• Wood sculpture
• Metal forms
• Abstract expression
• Modernist sculptural language
A retrospective exhibition is organized to showcase an artist's lifetime achievements and artistic development.
Step 1:
A retrospective exhibition includes:
• Major works from different phases of an artist's career
• Historical documentation
• Evolution of artistic style
• Important archival material
Such exhibitions are usually organized by prestigious museums or national institutions.
Step 2:
The retrospective exhibition of Dhanraj Bhagat was organized by:
\[
National Gallery of Modern Art (NGMA), New Delhi
\]
NGMA is India's premier institution for:
• Modern Indian art
• National-level exhibitions
• Preservation of important artworks
• Retrospective shows of major artists
Step 3:
Dhanraj Bhagat is regarded as a pioneer of modern Indian sculpture because he:
• Introduced abstraction into sculpture
• Experimented with form and material
• Bridged craft and modernism
• Influenced post-independence Indian sculpture
His works often combine:
• Tribal inspiration
• Modern abstraction
• Dynamic structural design
Step 4:
Option (1): Gallery Espace
Gallery Espace is a private gallery and not the institution known for this retrospective.
Option (2): Gallery Latitude
This gallery is not associated with the major retrospective exhibition of Dhanraj Bhagat.
Option (3): Chemould Gallery
Chemould Gallery is an important private art gallery but did not organize the retrospective mentioned.
Step 5:
Since the retrospective exhibition of Dhanraj Bhagat was organized by NGMA, New Delhi, the correct answer is:
\[
\boxed{\text{(4) National Gallery of Modern Art, New Delhi}}
\]