Acar enthusiast is interested in studying the relationship between the asking price of used cars and their age. which is more naturally the explanatory variable?

What does the author describe in this passage

Often, a goby fish and a shrimp will live together in a burrow the shrimp has dug in the sand. the shrimp is almost blind and therefore is unable to see predators approaching when he is outside of the burrow. when the shrimp is in danger, the goby fish touches the shrimp with its tail to warn him. then, both go back into their burrow for safety. which type of relationship does this represent? a. mutualism b. parasitism c. commensalism d. predator/prey

All of the following apply to a company’s stockholders except