Answer:
basic needs
money
goods
Explanation:
basic needs.
we change change things with things and it is easy to achieve and good communication too. for example.
1. if I have many design cloths, but I don't have suitcase and my neighbour has suitcase but she or he don't have design cloths.
so we can trait design cloths with suitcase.
money.
if we have money it is easier to achieve anything.
eg.
if we don't have some things or if something is finished we can trait with someone who has that thing which we don't have. so money is any thing.
Good
it is easiest way to achieve in trait.
because all like to trait goods with goods.
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