Which is the last step in amending the u. s. constitution? a. the voters approve the amendment in a national election. b. the president signs the amendment in a public ceremony. c. three-fourths of the state legislatures ratify the amendment. d. two-thirds of both houses of congress ratify the amendment.

B. The president signs the amendment in a public ceremony.

A proposed amendment has to go into the both the House of Representatives and the Senate to be sent to the president. If the president signs it, it passes. If the prez. vetoes it, two-thirds of Congress override the veto, but two-thirds of Congress is not needed so it can be sent to the prez.

D

Explanation:

i got it right

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain