What behavior do elements in a stack follow? first in, last out, or filo behavior last in, first out, or lifo behavior first in, first out, or fifo behavior last in, last out, or lilo behavior

A stack item behaves like Last In First Out, which is equivalent to First In Last Out.

FIFO and LILO are also equivalent, but they describe a queue.

answer; thats a symptom of hallucinogens,drug abuse;

yes you can very simple, click the heart and then click the follow requests button.