Answer:
A crystal face tends to be dull and rugged where a cleavage plane (most commonly seen in mica) is smooth and shiny, only being dull towards the edges it splits.
That's because they wanted peace. It was the policy of appeasement. If they gave him what he wanted, that would solve his problems and keep the peace in Europe intact. They were however as it was only a matter of time before the war began, and it did with the invasion of Poland.
I believe it is C, dulled sensory perception. decreased anxiety is another effect, but it's more long term.
