The emergence of mortgage securities propelled the development of mortgage companies, an entity significantly different from the thrifts and banks that previously dominated the mortgage landscape. which of the following parties is responsible for providing mortgage origination services and initial funding within this new framework? a. security analyst b. mortgage banker c. mortgage broker d. portfolio lender

b. mortgage banker

Explanation:

Mortgage banker -

It is an institution , company or an individual which starts to mortgage , is known as the  mortgage banker .

The work of a  mortgage banker includes , use their own funds or the borrowed funds in order to fund the mortgages . As soon as the mortgage starts , then work of  mortgage banker is to retain the mortgage in a portfolio or can even sell the mortgage to the investor .

Hence , from the question information , the correct answer is b. mortgage banker .

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productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.