The correct answer is: Collision of the Indian and Eurasian plates.
The Indian and Eurasian plates are colliding, and this collision is responsible for the formation of the Himalayas. The Himalayas are the highest mountain range in the world, and they are still growing today. The collision of these two plates is also responsible for the formation of the Manipur Hills. The Manipur Hills are a mountain range in northeastern India, and they are part of the Himalayas.
The other options are incorrect because they do not describe the tectonic forces responsible for shaping Manipur’s landscape. The Pacific Plate is subducting under the Mariana Plate, and this subduction is responsible for the formation of the Mariana Trench. The African Plate is moving away from the Eurasian Plate, and this movement is responsible for the formation of the Atlantic Ocean. The Mid-Atlantic Ridge is a mid-ocean ridge that is formed by the divergence of the African and Eurasian plates.
The collision of the Indian and Eurasian plates is a convergent boundary. A convergent boundary is a boundary between two tectonic plates that are moving towards each other. When two plates converge, one plate is subducted under the other plate. The plate that is subducted is melted and recycled back into the Earth’s mantle. The plate that is not subducted is pushed up, forming mountains.
The collision of the Indian and Eurasian plates is a very slow process. It is estimated that the Himalayas are growing at a rate of about 5 millimeters per year. This slow process is what has allowed the Manipur Hills to form. The Manipur Hills are a relatively young mountain range, and they are still growing today.