Answer:
D.spatial skills
Step-by-step explanation:
An independent variable is a variable that represents an amount that is being manipulated in an experiment. In this case, the act of playing video games that can be manipulated to a greater or lesser extent to capture the effects on the dependent variable.
A dependent variable represents an amount whose value depends on how the independent variable is handled. In this case, the dependent variable is the spatial skills, which are being studied in order to determine the effects of video game on spatial ability.
In other words, if there is a suspicion that playing video games improves a person's spatial abilities, an experiment is performed in which different groups play video games to a greater or lesser extent and analyze the effects of games on ability of each group of individuals. Thus, research may confirm or reject the hypothesis of the effect of video games on spatial capacity.