In which situation my GDP not be an accurate indicator of the health of a country‘s economy

GDP is not always an accurate indicator of country's economy because it does not address health & education level, outside market activities, disparity in income level, technological advancement etc.

Explanation:

GDP (Gross Domestic Production) is not always considered as perfect indicator. As GDP do not indicate health and education level of society. Health and education is one of prime determinant of human resource. Market activities in other countries which influence economic level of country are not included in the calculation GDP.

Inequality in income level, technological advancement, also not included in GDP. Promotion of IT sectors influences market economy at great extent, wide gap in income level between rich and middle class society hampers economic prosperity of a country.

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).

i truly dont know the answer wait i do its 1,3,4