[单选题]What does "grow out of" mean in "Attitudes of respect, modesty and fair play can grow only out of slowly acquired skills"?9U1答案窝(daanwo.com)-大学生作业答案及考资分享平台 Adevelop from9U1答案窝(daanwo.com)-大学生作业答案及考资分享平台 Bbecome mature9U1答案窝(daanwo.com)-大学生作业答案及考资分享平台 Cdepend on9U1答案窝(daanwo.com)-大学生作业答案及考资分享平台 Dbe trained by