The external research that would be useful would be research.
Research could be divided into direct and indirect.
Direct research is being done by directly ask the potential customer what they want (through things like questionnaire)
And indirect research is being done through observation (pay attention to the market trend)
Answer:
You should make sure you are putting money into it every week, month, or year.
Explanation:
You must make sure you have enough money in the account so if you have some kind of an injury, or you want to buy something that costs lots of money such as a car, or a house, you want to make sure enough money is going into that account.
Answer:
Weakness 1 is signed paper are not stored in safe and secured location.
Weakness 2 is approval is not taken from any manager or person before purchasing the item from customers.
Explanation:
The store should keep a track in the system for the purchase of items from its customers. The store should get approval before purchasing the product and the cash dealing should be assigned to designated person who will be responsible for the payment to its customers. This will reduce chances of fraud as the cash will be handled by only one person and tracking will be easy.