If you have a temporary illness that may affect your ability to drive, you should: a. determine your own fitness for driving b. obtain a restricted drivers license c. only drive when you're heavily medicated

Option A

Explanation:

When a person is fit he can drive his own vehicle. He is not restricted to any kind of medical or restricted driving license.

But when a person is permanently ill or has any impairment then he must have restricted driving license, they are legally required to meet certain conditions to operate a vehicle.

In case a person is feeling sick temporarily, individuals are responsible for determining whether or not they are fit to drive a vehicle by their own.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia