Respuesta :
The obvious answer would be the third choice or C. The others would come off as offensive and in this case he is not trying trying to insult them but have and make a logical reasoning
C, all others come off as if he is complaining about the school. Because Morgan would like to go to the school (as he is looking for one, and cared enough to write a letter to them) so C will work the best. Also, due to the price, I suspect it is a posh school, and they would not accept an arrogant or angry person into their school.