Answer:
Part 1:
The four astronomical bodies one could choose to represent the 4 labels in the diagram are
A - universe
B - galaxy
C - solar system
D - Mars
The universe contains galaxies and galaxies holds solar systems which have planets like Mars
Part 2: D or a planet like Mars is unlike all their other astronomical bodies it does not have other astronomical bodies within it thus, its different from rest.
It is the stalk of the plant
The correct answer for this question would be C) At seafloor spreading centers or the third option.
The correct answer is a. with; diffusion
Metaphase
At the end of the phase the cell divides into two new cells