Earthquakes are normally associated when two tectonic plates move away from each other causing a rift in the plate and you get an earthquake.
Answer:
Isotope of carbon-12.
Explanation:
The MOLE is a unit of measurement of the amount of a pure substance which contains exactly the same number of chemical units which could be (Atoms, molecules etc.) posses atoms in exactly 
grams of isotope of carbon-12 (i.e., 
).
So, The mole is the Notation used for an amount as same the 12 number is used for dozen for making count of Bananas and many more.
The is known as the fundamental constant names Avogadro's number (
), It is in the honor of Italian scientist Amedeo Avogadro.
That would be c. :) :) :)
Since it is given that their particles have a large difference in size, we can conclude that the particles of small size get embedded into the space between the particles of large size. Thus it doesn't increased it volume as it should have.
