Answer
a. Group VII
b. Group II
c. Group VIII
d. Group I
Work Step by Step
a. Group VII. This is fluorine. The outer electrons are $2s^{2}2p^{5}$.
b. Group II. This is magnesium. The outer electrons are $3s^{2}$.
c. Group VIII, aka Group 0. This is argon. The outer electrons are $3s^{2}3p^{6}$.
d. Group I. This is potassium. The outer electron is $4s^{1}$.