I would say that you would need to see what the environment around the area is. and what kinds of animals would be out of homes.<span />
I believe the answer is (B) Parasitic.
The probability of transmitting both traits to his son is Zero. This is because the son has one X chromosome and one Y chromosome (XX), therefore since the traits are linked to the X chromosomes, it means the son will only be a carrier but will not show the trait phenotypically.
Guessing you mean "impulse".
It means to have a sudden strong desire to do something or a small amount of energy that moves from one area to another.
Hope this helps.
A force that creates something MUST be constructive force so the answer will be B.