Explanation:
Mr Rose has just retired from teaching. His age is 60 and he is not a risk taker. He has only a saving account in which he managed to save some money during his life. Now he wants to invest his this money, but being a non risk taker, he wants to invest it somewhere where the risk is too low or almost none. So for him, the best option to invest is in treasury bills. He should purchase the Treasury bills for 5 or 10 years according to his choice, and he will enjoy the interest earned on that while keeping the principal amount safe. There would be no risk in investing in Treasury Bills. This will give him a source of income as well. If he doesn't want to have an income through investment, he can also try to zero risk invest, i-e bonds.
The following is missing for the question to be complete:
diathesis-stress
biological
gene-environment correlation model
interpersonal
Answer: Diathesis-Stress model
Explanation: This model is, in fact, a psychological theory that deals with a particular mental disorder and its aftermath by observing certain innate predispositions that make one susceptible to stress in combination with experienced trauma that heightens the propensity to stress. The word diathesis itself indicates a sensibility for something, a propensity for something, or simply a predisposition. Mental disorder occurs because of the predisposition to something like that with stressful life situations that can accelerate the disorder. It should be emphasised that the predisposition to a particular disorder does not refer only to the mental disorders but to the physical disorders, although this term is most commonly associated with mental disorders such as schizophrenia and depression. It is important to notice this disorder in children, i.e whether they have an inherent tendency for a disorder. Depending on the level of inherited propensity for a particular disorder, it also depends on the level of experiencing a life stressful situation that will accelerate the disorder. In other words, if a person has a high vulnerability to a disorder, they need a low level of stress, which is the trigger of the disorder and vice versa.
The domain that can live in extreme environment is ARCHAEA
Black market or underground economy is the term used to describe the clandestine and illegal sale of goods, products or services, violating the pricing or rationing imposed by the government or companies.
The phenomenon of the black market arises in times of crisis or periods of government control of the economy, usually when the scarcity of basic goods forces governments to impose price controls or rationing of goods.
Answer:
We can then infer that the black market is regulated by the government of the country to which it belongs.
