Multiple Choice
A researcher decides to measure happiness by the number of times a person smiles each hour. Which statement best describes the relationship between happiness and smiling?
A) Both happiness and smiling are variables.
B) Both happiness and smiling are concepts.
C) Happiness is a concept and smiling a variable.
D) Happiness is a variable and smiling is a concept.
Correct Answer:

Verified
Correct Answer:
Verified
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