When did western civilization first embrace the idea that humans needed to be one with nature?

a. early modern period
b. roman period
c. romantic period
d. colonial period

D. Remove electrons from its full outer energy level

Explanation:
The atom achieves its stable state when its outermost shell is completely full with 8 electrons (based on the octet rule)
Any atom whose outer shell is not completely full tends to lose gain or share electrons in order to complete this shell and become stable
Therefore, it is pointless for an atom with an outer shell having 8 electrons to lose electrons, because by this it convert from being stable to being unstable.

Hope this helps :)