Please select the word from the list that best fits the definition
elevation boundary above which continuous forest vegetation cannot grow
cordilleras
estuary
llanos
pampas
piedmont
timber line

the united states has a federal government. the president is the head of the federal government of the united states. however, each state forms its government for administration purposes. the powers of the state governments are exercised within restricted state boundaries. and citizens participate in this government by voting.

answer; self-efficacy;

i think it's b or c hope this

what are the answer choices?