Ninety-two-year-old henry is watching his 26-year-old grandson play a video game that involves a military-style shootout. henry challenges his grandson to a round, but a few minutes into the game, henry becomes frustrated, mutters something about his fingers not working fast enough, and decides to quit. henry's inability to keep up with his grandson's quick game play is best explained by the
a. peripheral slowing hypothesis.
b. generalized slowing hypothesis.
c. shortening of reaction time.
d. increased speed of processing time.

a) Peripheral slowing hypothesis.

Explanation: Peripheral slowing hypothesis is the theory that states about outer nervous system's processing and functioning speed starts to slow down. This is caused due to changes in nerves of the brain due to ageing that slows the process of communication with organs and muscles.

According to the situation of the question, Henry's slow processing of finger is due to the old age as compared to his grandson which has declined the functioning of his nerves with the muscles and organs

Other options are incorrect because generalized slowing hypothesis  is slowing process of age due to cognitive factors. Reaction time shortening is the slow response .Fast speed of processing time is quick speed in processing any information for body functioning.

Thus, the correct option is option(a).    

buildings sir and respect

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).