All of the following improved voting rights in the 1960's except
a. passing the 23 amendment
b. passing 24 amendment
c. the enacting by congress of the 1965 voting rights laws
d. the 1968 open house law

The correct answer is D "the 1968 Open Housing Law"

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.

yes he did writing dots to make the answer