Smallest objective lens first
I think the correct answer from the choices listed above is option A. When population growth increases in an area, there will be an increasing birth rate with a greater number of young organisms. This is because more young organisms are being born and added to the population.
It is called a positive psychology as it is responsible for having or making an individual strengthen his or herself in a way of his or her well being or a representative as an individual. It is a way of having positive characteristic and attitudes which is seen above.