Under an expansionary taxation policy, the government tries to stimulate economic growth by

B. Reducing taxes. 

Expansionary policies are trying to put MORE money into the economy, and reducing taxes is one way of going about it.

Lower taxes = more money for consumers = more money for producers (because consumers will spend more) = increased economic growth. 

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its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

this is a good question! i'll do some research and come back when i have the answer!