This is known as observational learning.
The proper answer in your case is D ok by
Money needs to be portable so that it can be easily moved from place to place. If it were not in a portable form, this would make it difficult to make purchases. Also, money needs to be acceptable: If we can't agree what forms of money can be used, then this will eliminate our ability to exchange value.
The correct answer is letter B.
Explanation: A global firm has headquarters in more than one country and many contracts as well, enabling it to have extensive capital and many possibilities for market variation.
The answer is A. Behavior is not a factor in the development of obesity in childhood. What causes obesity are lesser body movements and eating too much. Genetics, age and activity level are the factors that can cause obesity to children.
