The normal force acting upon the car is best represented by arrow the force of gravity acting upon the washers is best represented by the applied force on the car is best represented by arrow

1. The normal force acting upon the car is best represented by arrow A.    

Reason:

The direction of normal force is always upward and opposite to gravitational force that why A is correct option.

2. The force of gravity acting upon the washers is best represented by arrow B.

Reason:

The direction of gravitational force is always downward toward the center of gravity and opposite to normal force that why B is correct option.

3. The applied force on the car is best represented by arrow C.

Reason:

The direction of applied force is along the  direction in which it moves. that why C is correct option.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.