Attending a 'Synagogue' is part of Jewish tradition where in synagogues they celebrate a boy or girl 13 years of maturity. Where as, in Jewish tradition 13 years of a child- the child is knowledgeable about their Jewish roots and becomes apart as a Jewish adult (treated and challenged as a adult.)
Answer: I believe the answer is D. To demonstrate that soldiers and workers were equally important.
Explanation: below the text reads 'laborer and combatter' which would be referring to the soldier and worker. Both of them are shown with equal stances and are shaking hands.