B. Because nickel silicon and magnesium is not correlated to lava(magma) so there for b is your answer
New Jersey is a state in the northeastern<span> and mid-Atlantic regions of the United States. It is bordered on the </span>north<span> and east by New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania, and on the </span>southwest<span>by Delaware.</span>
<h2>12km</h2>
<em><u>Explanation:</u></em>
1 cm = 4 km
3 cm = 4×3 km
= 12 km
<h2>follow me</h2>
