Final answer:
The initial momentum of the egg is zero since it starts from rest. After being dropped, it gains velocity and thus momentum, which becomes zero again when it is stopped by the styrofoam block, resulting in a negative change in momentum.
Step-by-step explanation:
Discussing the initial momentum, final momentum, and change in momentum of a dropped egg, the initial momentum of the egg is zero because it starts from rest. When it is dropped, it gains velocity due to gravity, thus when it reaches the height of the top of your head its momentum is non-zero because momentum is mass times velocity (p=mv) and the egg has mass and now has velocity. When the egg is stopped by the styrofoam block, the final momentum is brought to zero because the egg comes to rest. The change in momentum is the final momentum minus the initial momentum, so it is a negative value since it went from a non-zero value to zero. Therefore, the correct answer is 'B) Initial momentum is non-zero, final momentum is zero, change in momentum is negative.'