Final answer:
During overhaul in firefighting, axes and pry bars are the primary tools used to open up walls and floors. Power drills and socket wrenches are useful tools, but not typically for this context.
Step-by-step explanation:
During overhaul, which is a phase in firefighting where firefighters search for hidden flames and hotspots, certain tools are preferred to open walls and floors effectively. The correct answer to which tools are used to open walls and floors during overhaul is a) Axes and pry bars. These tools are designed to forcefully penetrate and open up sturdy structures, allowing firefighters to check for any remaining fire or heat that could reignite. While a power drill or socket wrenches are also useful tools in maintenance and construction, they are not the primary tools for overhauling in firefighting scenarios.