Power of the Void

Part 1
The International School of Kuala Lumpur provides an exeptional that challenges each student to this (Silence) attitudes, skills, knowledge and understanding to become a highly successful, spirited, socially reponsible global citizen.

I think that adding a silence between this and attitudes is creating the most tension. I think it is because you are pausing just before you say what kind of things each student challenges. Also, putting the silence after the word 'this' sounds better than any others. I think this is the best answer that I can think of.

Part 2
One way that the composers create tension in the music is by putting rests in the middle of the music.