C. It changes the tone from one of downcast complaint to one of gladness and celebration.
Explanation:
The beginning of the poem has a tone of complaint. The speaker tells us that the day was not an enjoyable one. It was the shortest day of the year, the air was dead and the sky was gray. However, the symbolic description of music that is included afterwards changes the tone from one of complaint to one of gladness and celebration. Towards the end of the poem, the poet's words become more positive and he concludes with a very happy statement.
Rose asks Troy why he will not let Cory play football when Cory is trying to follow in his father's footsteps. Troy explains that when Cory was born, he decided he would not allow Cory to pursue sports in order to spare Cory from a fate like his own.
Mechanical teacher was just a machine or computer which can teach but according to the level set without any kind of emotions whereas human teacher can make learning more easier according to the level of students who can understand their emotions as well.
