This photo shows sugar dissolved into a solution with a at the bottom of the jar.
a.) solvent
b.) precipitate
c.) plasma
d.) solute

Option (D) is the correct answer.

Explanation:

A solute is defined as a substance which is present in small amount in a solution.

Whereas a substance present in more amount in a solution is known as a solvent.

A precipitate is an insoluble solid formed due to the chemical combination of two aqueous solutions.

Plasma is a state of matter which is a hot ionized gas with positively charged ions and negatively charged electrons.

Therefore, in the given photo some particles which are insoluble remain in the solution. Hence, they are solute particles.

Thus, we can conclude that this photo shows sugar dissolved into a solution with a solute at the bottom of the jar.

it takes about 30 days for it to break down

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