the correct answer is (d) jews began migrating to germany after the end of world war i.
in 1933, adolf hitler tried to make jews' life so unpleasant in germany that they needed to emigrate from that country. by the end of world war i, jews trying to find a way out of germany they formed hundreds of lines to be outside the british consulate, hoping that they would get a passport or a visa.
germany had to surrender all of its colonies as ln mandates, give alsace-lorraine back to france, demilitarize, and pay reparations for war damages. hence the buildup of anger leading to the powder keg germany became making it an easy target for manipulation (i.e. hitler) and leading to ww2