“the right of citizens of the united states to vote shall not be denied or abridged by the united states or by any state on account of sex.” which of the following reflects the source and impact of this quote? it is from the 19th amendment to the u. s. constitution. the amendment extended the right of former slaves to vote but had no real impact because slavery was over at the time it was ratified. it is from the 19th amendment to the u. s. constitution. because of this amendment, the voting rights of women are protected because a prior related amendment failed to include gender. it is from the 15th amendment to the u. s. constitution. male as well as female former slaves could vote in federal elections though not necessarily in state-level elections as a result. it is from the 15th amendment to the u. s. constitution. it was intended to protect the right of women to vote and hold elected office but was ignored for about one hundred years.