Henry's reaction to Williams is<span> surprise</span>.
Yes: Students should wear uniforms, it keeps everyone equivalent and reduces the percentage of bullying in learning establishments.
Just examples
No: Students shouldn't wear uniforms, they should have the unchallenged, unprecedented, freedom to wear whatever they shall please.
It would be much better if there was a context representing the idea which has to be determined. But 'whom' actually can pose as an object in the sentence, only when it is <span>objective case.</span>