Consistent behavior patterns that people display in many different situations are often called individual differences by personality psychologists.
<h3>What is individual difference?</h3>
Individual difference is what makes an individual different form another.
The behavior can differ from one individual to another.
Each other with their own unique personality.
Therefore, Consistent behavior patterns that people display in many different situations are often called individual differences by personality psychologists.
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The items which are most durable as a form of currency (and are also the most portable) would most likely be olive oil. Olive oil has a long shelf time and doesn't require nor take up much space. It is very precious in lower quantities and is therefore a good currency.
In the early 1800s, stores weren't authorized to issue currency themselves.

People play a very important role in the process of development as :
- People themselves are a part of development
- Contribution and a small hand itself from the side of people provide a great help.
- Mutual understanding amoung other people and spreading of awareness.
Answer:
I believe B, Herding and farming.