The correct answer is option 'A', The Bauhaus School.

The Bauhaus School was a German art school that operated from 1919 to 1933. It was founded by architect Walter Gropius and aimed to integrate arts, crafts, and technology into a unified approach to design. The Bauhaus had a significant influence on various art movements and artists around the world, including India.

In 1922, an exhibition of works by European artists, including Paul Klee and Kandinsky, was organized in Calcutta (now Kolkata), India. This exhibition was a pivotal moment in Indian art history as it introduced Indian artists and the public to the ideas and styles of the European avant-garde, particularly those associated with the Bauhaus.

The exhibition showcased the works of artists who were part of the Bauhaus movement, which emphasized abstraction, experimentation, and the integration of art and technology. The artworks displayed at the exhibition were characterized by innovative use of color, form, and composition, challenging traditional notions of art.

The impact of the Bauhaus exhibition in Calcutta was profound. It provided Indian artists with exposure to new artistic approaches and ideas, sparking a dialogue about modernism and abstraction in Indian art. The exhibition also influenced the public's perception of art, challenging conventional notions of representation and encouraging a more experimental and progressive approach.

Following the exhibition, several Indian artists, such as Nandalal Bose and Benode Behari Mukherjee, began incorporating elements of modernism and abstraction into their work. They embraced the principles of the Bauhaus, including the use of bold colors, geometric forms, and a focus on the expressive potential of art. This marked a significant shift in Indian art, as artists started to move away from traditional styles and explore new avenues of artistic expression.

In conclusion, the exhibition of works by Paul Klee, Kandinsky, and other artists in Calcutta in 1922, influenced Indian artists and the public through the introduction of Bauhaus ideas and styles. This led to a broader acceptance and adoption of modernist and abstract approaches in Indian art, shaping the trajectory of Indian art history.