单选题 For a child the first element in his leaning by imitation is______.

【正确答案】 B
【答案解析】通过第三段第一句“There is a second element at work in this situation.”可知儿童通过模仿学习的第一要素应在第二段中,即"He is seeking a response which will gain certain ends.”,所以[B]足正确答案。