Answer:
The correct options are Lower the Nation's Tariffs, Restore the Nation's Treasury System and Settle the Ownership of the Oregon.
Step-by-step explanation:
The correct three options are as
Lower the Nation's Tariffs
Restore the Nation's Treasury System
Settle the Ownership of the Oregon
There were total four objective of James K Polk out of which three are as indicated above, while the fourth one was to acquire California and its harbours from the Mexico, which is not mentioned here.