75% of state legislatures must approve a proposed Constitutional amendment for it to become law
Explanation:
There are many steps which are involved in the amendment process first the two thirds of both the houses of the constitution pass a proposed amendment and then this is sent for ratification to the states and it is discussed upon by various members of the constitution. Debates are done upon whether to pass it to the constitution or not and then it is decided upon.
Then three fourths of the state that is thirty eight out of fifty states ratifies the proposed amendment and then it is passed on with the convection of the president and the governor. The amendment process is very difficult and it is often a long process and a time consuming process
The answer is: psychometric; Piagetian
According to the psychometric approach, the cognitive development could be measured by using numerical assessment with a standardized result. This is similar to Alfred's view who believe that those who give better performance in quantitative measures of variables tend to be more developed.
According to the Piagetian cognitive approach on the other hand, the cognitive development could only be measured by how well an individual is interacting with their biological traits and the environment around them (similar's to Jeanne's view)
I believe they can serve two terms which is the same as 8 years
