The success of the low-ball technique is attributed to which psychologists principle? A. Commitment because once an individual commits to one request, they are likely to commit to almost anything
B. Commitment because once an individual commits to one request, they are more likely to commit to a similar request even if the details are altered
C. Reciprocity because once an individual does someone a favor m, they know they owe the other person a favor back.
D. Reciprocity because once a person is close to accepting a fair deal, it’s only fair that they should agree to a similar deal, even if some of the details are changed

Read this excerpt from i never had it made. "it's all that ought to count," he replied. "but it isn't. maybe one of these days it will be all that counts. that is one of the reasons i've got you here, robinson. if you're a good enough man, we can make this a start in the right direction. but let me tell you, it's going to take an awful lot of courage." he was back to the crossroads question that made me start to get angry minutes earlier. he asked it slowly and with great care. "have you got the guts to play the game no matter what happens? " "i think i can play the game, mr. rickey," i said. the next few minutes were tough. branch rickey had to make absolutely sure that i knew what i would face. beanballs would be thrown at me. i would be called the kind of names which would hurt and infuriate any man. i would be physically attacked. could i take all of this and control my temper, remain steadfastly loyal to our ultimate aim? which is the central idea of this excerpt?