1. D The airplane yaws to the dead engine, you apply juts enough aileron to maintain wings level the nose is still pointing towards the dead side.
Here is some good reading:
17 Multi-Engine Flying
2. B
3. B Absolute mean rate of climb is zero
4. C
These are two of the same questions.
Don't use Wiki to study but it's not a bad article:
Minimum control speeds - Wikipedia, the free encyclopedia