wthecc this looks amazing
Answer:
Allen's ability to speak is an example of a Phenotype.
Explanation:
Phenotype is defined as the set of observable characteristics of an organism. In this sense, the set includes the morphological, physiological and compositional characteristics of an individual. They are determined by the set of our genes, but not just by the genes, also being influenced by the environment in which an individual is inserted.
One pretty straightforward answer could be investment to physical and human capital. But if you are if you are working with a mathematical model the answer to your question depends on the specific model. For example, in an equilibrium model from economic theory, you could find the determinants of labour productivity by taking the partial derivative of the production function with respect to the amount og labour.