Final answer:
Quick-Disconnect Couplings are the correct option for what is commonly used on shop air hoses; they allow for easy, leak-free connections and disconnections of pneumatic tools. Option A is correct.
Step-by-step explanation:
Quick-Disconnect Blank are typically used on shop air hoses. The correct answer to fill in the blank is: A) Couplings. Quick-disconnect couplings are devices that are used to easily connect or disconnect fluid lines without causing leaks and minimizing loss of fluid.
These devices generally operate by having a male end that inserts into a female part, and a mechanism allows for a secure connection that can easily be released. They are commonly found in pneumatic and hydraulic systems, and their ease of use makes them ideal for applications like shop air hoses, where tools may be changed frequently.
The subject of this question is Business, as it relates to the usage of quick-disconnect blanks on shop air hoses.
Quick-disconnect blanks are typically used on shop air hoses to allow for easy connection and disconnection. They are commonly referred to as couplings in the business and industrial sectors.
Therefore, the correct answer to this question is option A) Couplings.