The palaeomagnetic results, or historical measurements of the earth`s magnetic field, provide information about the movement of tectonic plates over time. In the context of India, the findings have shown that the Indian land mass has moved northward.

Option 1 is the correct answer because it aligns with the understanding provided by the geological studies and evidence. The Indian subcontinent was once part of the southern supercontinent Gondwana, and it started its northward journey around 71 million years ago, moving towards the Eurasian plate. This movement resulted in the formation of the Himalayas.

Option 2, 3 and 4 (southward, eastward, westward), though plausible directions of a landmass movement, are not correct in terms of the Indian land mass`s historical movement. The palaeomagnetic results do not support these as the correct paths of movement for the Indian subcontinent.

This understanding is fundamental in the study of earth`s geological history, continental drift, and plate tectonics.