Which of these do you need in order to use symbols to mark a text? A. A set of categories
B. Questions
C. Highlight pens
D. A reading plan

What is the best way to manage oil transport on waterways? a. prevent oil spills and regulate the amount of oil that can be shipped at one time. b. use a skimmer, containment boom or chemical dispersant to clean up spilled oil. c. burn off oil spills from the water's surface when they occur.