Explanation:

All codes are correct.

• The Indo-Islamic architecture inculcates the elements of Saracenic, Turkish and Arab architecture. The Muslims absorbed many features of local cultures and traditions and combined them with their own architectural practices. So, a mix of many structural techniques, stylised shapes, and surface decorations came about through constant interventions of acceptance, rejection or modification of architectural elements. The first new element added in the Indian architecture was the use of shapes instead of natural forms. This apart, use of calligraphy as inscriptional art was also a new element added to by Muslims. Muslim added the inlay decoration and use of coloured marble, painted plaster and brilliantly glazed tiles. The Dome was a new element added by the Muslims. They avoided the representation of human beings; Provided spaciousness, massiveness and breath to Hindu architecture; Use of calligraphy pietradura technique; Use of arabesque method; Significance of light; Symmetry; Use of water in premises; Foresightening technique and Charbagh Style. Hence option 4th is correct.