The last option is the most accurate
Hope this helps!
The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
D. because if they're not careful they become extinct by predators, then they have to be careful to survive by staying alert.
Please help.
autism
