A manner of studying human development that stresses the fluctuations and transitions that occur constantly throughout life is referred to as the:

Dynamics-system theory.

Explanation:

Stress may be defined as the mental condition that can cause anxiety, depression or tension. Small stress improves the condition of an individual but high stress can cause long term depression.

The dynamic system theory states that motor development occurs with the changes in the development system and explains the new motor abilities in children. This theory also explains the transitions that might occur in the individual during the stress condition.

Thus, the answer is dynamics system theory.

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.