Molarity tells us ___.
A. whether a solution is considered weak or strong
B. how many grams of solute are dissolved in a given volume of solution
C. the likelihood that a given volume of solution will dissolve more solid
D. how many particles are dissolved in a given volume of solution

The answer is

B.how many grams of solute are dissolved in a given volume of solution.

Explanation:

Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution

M=n/v

M-molar concentration

N-moles of solute

v-liters of solution

To find the molar concentration of a solution, simply divide the total moles of solute by the total volume of the solution in liters.

Molar concentration is the same as molarity, but molarity and molality are not the same thing. They are different ways to quantify the amount of solute in a solution, and the concentration of a solution in molarity is not interchangeable with its concentration in molality.

Source- Khan Academy, Wikipedia

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.