Which of these features was most likely formed by a divergent boundary? A. Himalayan Mountains
B. San Andreas Fault
C. Mt. St. Helens
D. Great Rift Valley

Today, the term is most often used to refer to the valley of the East African Rift, the divergent plate boundary which extends from the Afar Triple Junction southward across eastern Africa, and is in the process of splitting the African Plate into two new separate plates.

Explanation:

So it is D

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

2b2t

explanation:

2b2t