Which of the following would not increase the rate of gas diffusion across the respiratory membrane?
a. increased solubility of the gases
b. longer distance for the gases to diffuse
c. greater surface area available for gas exchange
d. steeper concentration gradient

Longer distance for the gases to diffuse.

Explanation:

Diffusion can be defined as the movement of particles from a place where its concentration is high to the place where its concentration is very low.

The movement of the particles is dependent on many factors such as solubility of the gases, if the place of concentration is steeper and greater surface area for the gaseous exchange.

The factor which will decrease the rate of diffusion is when the distance between the two place where diffusion will take place is more or large.

Hence, the correct answer is option A

having the certification could make the person more required to do a certain thing then another.this could also lead to different job offers or opportunities.