I would say b but then again im not really sure so...
D.lets things enter or exit the cell
Absorb? tell me if im wrong.
B. Cladistics, because the other two choices don't make any sense.
Answer:
The reason why stars are so important is because they have helped humans navigate through Earth . When it was dark these stars would light up the sky giving people light . ... the most important is the Sun, because without that it wouldn't be life on Earth . Earth would just be a rock with ice.
Explanation: