Answer :
Final answer:
The tool with two retractable blades that are used to cut and pull through obstructions is the plaster hook, which is distinct from other tools such as the pike pole, battering ram, and Kelly tool.
Explanation:
The tool with two retractable blades that depress as the head is driven through an obstruction and then reopen is known as the plaster hook. This tool is typically used by firefighters and rescue teams to pull apart walls or ceilings during emergency situations. Unlike a pike pole which has a spike and hook, or a battering ram which is used to smash through barriers, or a Kelly tool which combines various functions including prying and shutting off utilities, the plaster hook specifically features retractable blades to cut and pull materials away efficiently.
