I believe the answer is <span> the social exchange theory
</span><span> the social exchange theory is based on the assumption that all people are individualistic in nature.
</span>This theory believes that human only choose to interact with another human only if the benefit from interacting with that other human surpass the cost to interact with him. (which explains the reason some people choose to marry old -rich individuals despite negative perception that will be labeled to them)
Differences between Eastern and Western Coastal Plains are:
1. The Eastern Coastal plain lies along the east coast of India and is washed by the Bay of Bengal whereas the Western Coastal Plain lies along the west coast of India and is washed by The Arabian Sea.
2. The East Coast plain runs smoothly from the north to the south with a broad plain and level surface whereas the West Coast plain also runs from the north to the south and it is in some places intersected by the mountain ridges.
3. The large rivers make wide deltas on the Eastern Coastal Plains. But the short swift rivers do not make any deltas on the West Coast.
The anion that would be expected to be most stable than of
others is the iodine. It is because base on its electronegativity, it has the
least electronegativity property compared of other anions and when there is
less electronegativity, it is considered to be the most stable.