pick out (someone or something) as being the best or most appropriate of two or more alternatives:he chose a seat facing the door [no object]:there are many versions to choose from
[no object] decide on a course of action: [with infinitive]:he chose to goI’ll stay as long as I choose
cannot choose but do something
formal have no alternative to doing something.
there is little (or nothing) to choose between
there is little or no difference between:there is little to choose between the different methods