What does this guy mean?

Which of the following is not a way in which trees benefit the environment? a. they remove a significant amount of carbon dioxide from the atmosphere. b. they remove a significant amount of oxygen from the atmosphere. c. their roots hold soil in place, reducing rates of erosion. d. they remove ozone and particulates from the atmosphere. select the best answer from the choices provided a b c d

Where can page numbers appear? check all that apply. in the header inside tables in the footer at the bottom of columns at the top of columns

Which option completes the explanation for conflict of interest in an organization