1. Giving up one benefit or advantage to gain another regarded as more favorable is called trade-off. Every economic decision involves some trade-off.
2. Opportunity cost is the second-best alternative or value of the alternative, that must be given up when making a choice. Because of scarce resources with alternative uses allocation of resources involves some opportunity cost.
3. Cost-benefit analysis can be defined as the process of examining the benefits and costs of each available alternative in arriving at a decision. Resources are allocated efficiently if the cost incurred and benefit earned is equal.
4. As we go on increasing the quantity consumed of a product, the marginal utility or satisfaction earned from its consumption goes on decreasing. This is called diminishing marginal utility.
The answer base on the given scenario would be letter a,
Roger would gain benefits as he was protected from a financial loss as this
insurance covers him financially as the insurance of which premiums he has paid
and were to gain would only make him the person of having to have the benefit
as he is the one who has the insurance covered for him, which is entitled to
his name and that the benefits and offers would be his gain.
For us to calculate the percentage change, we have to deduct the trading for VEF in January from the trading for VEF in February and then divide by VEF trading in January. This will be: