Question

Which of these correctly lists the stages of development of the inner planets?
A. protoplanets ® planetesimals ® inner planets ® heavier elements
B. heavier elements ® planetesimals ® protoplanets ® inner planets
C. planetesimals ® heavier elements ® inner planets ® protoplanets
D. inner planets ® protoplanets ® heavier elements ® planetesimals

Answer 1

The correct answer for the question that is being presented above is this one:  "C. planetesimals ® heavier elements ® inner planets ® protoplanets" The list of the stages of development of the inner planets is this C. planetesimals ® heavier elements ® inner planets ® protoplanets

Answer 2

The answer to the question stated above is letter B. heavier elements ® planetesimals ® protoplanets ® inner planets

The formation of the inner planets undergo different stages of development.  These are:
heavier elements > planetesimals >protoplanets > inner planets