Acheeseburger is a. a excludable and rival in consumption. b nonexcludable and rival in consumption. c nonexcludable and nonrival in consumption. d excludable and nonrival in consumption.

The correct answer would be : A. excludable and rival in consumption.

I hope that this helps you !

(a) is the correct option

Explanation:

Yield of tomatoes is a dependent variable

The dependent variable is something that is observable and measurable, here in this case yield of tomatoes can be calculated and measured depending on the type or concentration of fertilizer usedThe independent variable, also known as the experimental treatment is the difference or change in the experimental conditions that is chosen, here in this case it is the concentration or type of fertilizerTo ensure that only the independent variable is affecting the dependent variable, all the other factors acting upon the test situation must be kept constant, these factors that must be kept the same are called the controlled variables, or constant variablesHere in this case amount of water, exposure to sunlight and type of seedlings is kept same