Answer:
The given pedigree analysis shows sex-linked trait where the female work as a carrier and have X linked recessive gene that is 
and the male is normal.
So, Fred will be a male with 
gene and Fred will be affected with X linked disease which is carried by female.
If, gene in the female (Ann) act as a carrier of hemophilia and the male (John) is normal, then Fred will be a male affected with hemophilia (sex linked disease).
Hence, Fred will be affected male with genotype.
Its redundant. The velocity of a flying object already includes its airspeed .
Osmosis is the movement of solvent particles
Diffusion is the movement of particles from an area of higher concentration to lower concentration
I think that the answer is C
200,000 is the population density.
