Which is an example of a presidental power that has no clear limitation

A. Selecting a Cabinet
B. Making a treaty
C. Appointing Ambassadors
D. Granting Pardons

ask google there you might be able to find an answer for the question you're trying to ask

i think it was   tsar alexander ii

it proved indian land claims were unjustified.

omg right, you cant excpect some one to give you the right answer if you cant list them in the first place