Final answer:
The correct answer for the definition of treasury is Exchequer, Bank, and Cache. Trash is not related to treasury. A treasury manages currency, funds, and revenue for an organization or government, including holding reserves and being involved with the payment system.
Step-by-step explanation:
A treasury refers to the place or institution where the currency, funds, and revenue of an organization or a government are managed. The term can be synonymous with exchequer, which is the government department responsible for the national revenue and expenditure, or a bank, which is a financial institution licensed to receive deposits and make loans. Cache may also be considered correct in a less formal usage, as it signifies a storage for valuables or money, though it's more commonly used for things hidden or stored away. In contrast, trash has no relevance to the concept of treasury, as it indicates something that is worthless or to be discarded. From the options provided, the correct answer for the definition of treasury would be a) Exchequer, b) Bank, and c) Cache.
To understand the role of a treasury further, consider that a bank's assets include reserves which are funds kept on hand and not loaned out or invested in bonds. Banks also provide savings deposit accounts where the funds might not be immediately accessible via check but can be withdrawn from a bank or transferred to a checking account. Furthermore, the payment system that includes smart cards, standard of deferred payment, and store of value functions, helps an economy in exchanging goods and services for currency and ensuring that money retains its value over time. In the context of a country, a treasury will be concerned with the net worth of the nation, the total currency in circulation, and the reserves held by its banking institutions.