You wish to execute the ls command, but it appears to be aliased. What is the easiest way to execute the original ls?

Answer: ls

Explanation/Reference:

see http://en.wikipedia.org/wiki/Alias_%28command%29#Overriding_aliases

In Unix shells, if an alias exists for a command, it is possible to override the alias by surrounding the command with quotes or prefixing it with a backslash. For example, consider the following alias definition:
alias ls=’ls -la’
To override this alias and execute the ls command as it was originally defined, the following syntax can be used:
‘ls’
or
ls