Which geological reason best explains the folded structure of the Himalayas?

Correct answer: Convergence of the Indian Plate and the Eurasian Plate

The correct answer is A. The Himalayas are young fold mountains formed when the northward-moving Indian Plate converged with the Eurasian Plate. Sediments deposited in the intervening Tethys Sea were compressed, folded, uplifted, and progressively raised into a major mountain system. This compression-and-folding process explains both the structure and the continuing tectonic activity of the Himalayas. The Deccan Trap resulted from extensive basaltic lava eruptions, not the formation of the Himalayas. The Aravalli is an ancient eroded range rather than a coastal feature, and the Eastern Ghats are not coral-built mountains. Plate convergence is therefore the decisive geological explanation.