Which term means a certain window of time in which a particular ability, such as language, must be learned in order for it to be learned at all

answer; /// the correct answer is (belongingness needs; good luck

nigger, that word was originated for white folks   to keep black people under

and when black people use it, they know that's just how they greet each other

and when white folks use it, they know there's a double meaning under

in about winter like late november to january

answer; a cost benefit analysis;