Answer:
caffeine — independent variable
Explanation:
Independent variable: In psychological research, the term independent variable is defined as the variable that is changing, altered, and manipulated by the experimenter or the researcher. The independent variable is responsible for affecting the dependent variable in an experiment i.e, any changes in the independent variable will cause a direct effect on the dependent variable.
In the question above, the pair that correctly identify a variable in this experiment is the caffeine — independent variable.
Cuba has a socialist economic system.
FROM PLATO
Answer:
Interest groups : A group of people who made various efforts to influence a government to create a specific type of legislations.
Legislative branch : branch of the government that has the power to create the legislation.
Interest groups will give funding to several candidate who wanted to run for the position in the legislative branch. If the candidate win, the interest groups expected that the candidate will return the favor by passing the legislations that the interest groups want.