which of the following helped reduce the prices of higher-cost products, such as automobiles, for consumers in the 1920s.

installment plans
the introductions of coupons
assembly lines
the development of advertisements

Question

which of the following helped reduce the prices of higher-cost products, such as automobiles, for consumers in the 1920s. 

installment plans
the introductions of coupons 
assembly lines
the development of advertisements

anonymous · Answer

D.

justnick09 · Answer

C why would it be D they don't even talk about advertisment

anonymous · Answer

I was thinking A.

justnick09 · Answer

i don't think so primarily because they mentioned automobile which were all about assembly lines which helped lower prices...

anonymous · Answer

well, I got that from here http://livingstandards1920s.weebly.com/installment-plans.html

justnick09 · Answer

hmmm

anonymous · Answer

Any answer that can be agreed upon??