Which of the following used factor analysis to reduce a large number of surface traits into 16 source traits, or factors?

Baby Max begins to cry as soon as he sees his mother pick up her car keys. Max probably does this because he learned to associate the car keys with his mother leaving. This example demonstrates

What will be an ideal response?

Mary, age 10, has asthma. Her parents bought a HEPA filter for her bedroom. This represents which level of prevention?

primary secondary tertiary quadruply