To study development researchers want to know how changes in thinking occur. when a change is gradual, linear, and quantitative, such as a child's height, development is considered to be:

continuous

Explanation:

The proponents of continuous development view that development in every aspect which includes physical, emotional, social, intellectual, etc is a gradual continuous process. Development psychologist believed that development is a continuous life long process. They view that development at one stage provides the base for the development at next stage. For example, first, a child learns to crawl then sit and then finally walks.

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the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.