Question

hitler gained support for anti - jewish policies in germany by
claiming that jewish people assassinating arch duke ferdinand.
crediting jewish people with helping germany win world war i.
forcing jewish people to pay german war reparations.
blaming jewish people for the economic depression after world war i.

Explanation:

Archduke Ferdinand was assassinated by a Serbian nationalist, not Jewish people. Hitler and the Nazis falsely claimed Jewish groups undermined Germany's WWI effort, not that they helped win it. They did not force Jewish people to pay reparations; instead, they scapegoated Jews for Germany's post-WWI economic crisis, including the hyperinflation and Great Depression, to rally support for their anti-Jewish policies.

Answer:

D. blaming Jewish people for the economic depression after World War I.