Which statement describes the dependent variable?
it is the causal variable.
it is the controlled variable.
it is the stimulus variable.
it is the measured variable.

The correct answer is D. It is the measured variable.

Explanation:

In an experiment or similar, the dependent variable refers to the variable or factor measured or studied. Besides this, this is called dependent because it is expected to change when the independent variable or factor manipulated by the researcher changes. For example, if a scientist wants to study the way radiation affects plant growth, the dependent variable is the growth rate of the plants (factor measured) while the independent variable is radiation (factor manipulated). Therefore, the statement that described the dependent variable is "It is the measured variable".

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)