Which theory states that earth's lithosphere is divided into moving pieces?

convection theory

plate tectonics

continental drift

robinson's theory

B. Plate tectonics

Explanation:

I took the test here is my proof that this is correct(I hope I helped):

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume