Which science goal is reflected in psychologists' hopes that their research will help to solve some practical problem

A)  understanding and prediction
B)  measurement and description 
C)  construction and revision
D)  application and control

Psychologists hope that their research will be applied to practical problems and ultimately help to control or solve them. This goal is reflected in the application and control aspect of scientific inquiry. Understanding and prediction is more focused on building theoretical models and explanations rather than solving problems directly. Measurement and description is important for accurately observing and recording data, but it is not necessarily connected to solving practical problems. Construction and revision is more focused on refining and improving theoretical models, rather than directly solving practical problems.