Single/multi-choice problem: Which of the following solutions is better for the following goal:
What should you do before you begin filling a sinkhole?

OPT:
--Remove any loose debris that may be in the sinkhole: tree branches, pine cones, etc.;
--Add debris to help fill the sinkhole up: tree branches, pine cones, etc.;
Remove any loose debris that may be in the sinkhole: tree branches, pine cones, etc.