Question

which of the following is an appropriate dependent variable for the experiment? the rate of viral infection the exposure to ultraviolet light the amount of virus killed the temperature of the environment

Explanation:

To determine the dependent variable, we recall that a dependent variable is what is being measured or observed and depends on the independent variable (the factor being manipulated). Let's analyze each option:

• "The rate of viral infection": This could be a dependent variable, but let's check others.
• "The exposure to ultraviolet light": This is an independent variable (something we might manipulate in an experiment about virus killing, for example).
• "The amount of virus killed": This is what we would measure in an experiment (e.g., if we manipulate UV light exposure or temperature, we measure how much virus is killed). It depends on the independent variable.
• "The temperature of the environment": This is an independent variable (we could manipulate temperature to see its effect on virus killing).

So the amount of virus killed is the dependent variable as it is the outcome we measure based on changes in independent variables (like UV exposure or temperature).

Answer:

the amount of virus killed