You have just arrived on the scene of a motor vehicle collision in which a compact car
was struck from behind by a delivery truck. The driver of the delivery truck is standing
outside his vehicle talking to police when you arrive, but the driver of the car is still
seated in the driver's seat. You have noted moderate damage to the rear of the car.
For which of the following injuries should you have the highest level of suspicion?

A. Neck injury
B. Chest injury
C. Fractures of the lower extremities
D. Abdominal injuries

A. Neck Injury

Explanation:

The forceful back and forth movement of the car as described will lead to a a neck injury called whiplash.

Whiplash is a neck injury due to forceful, rapid back-and-forth movement of the neck, like the cracking of a whip. Its is commonly caused by rear car accidents.

Options B, C and D are not correct

This is because the damage to the car was not severe. This can be deduced by the "moderate damage to the rear of the car" and the fact that the truck driver was still standing and appears to be fine as he talks to the policeman.

Chest injuries, fractures of the lower extremities and abdominal injuries are more common in more severe accidents

true

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).