Which process was occurring during some of the given stages that resulted in the formation of heavier elements
from lighter elements?
A) radiation
B) radioactive decay
C) nuclear fusion
D) conduction

C

nuclear fusion because they are fusing atoms together therefore increasing the number of protons therefore increasing the atomic weight making a heavier atom

Hope I could help.

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .