What is the valence of an atom with six electrons in its outer electron shell? A)1
B) 2
C) 3
D) 4
E) 5

D. Valency is 4

Explanation:

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

what in the weirdo : o