Answer:
ABC Electronics should write a request for proposals.
Step-by-step explanation:
A request of proposals is a type of document whose purpose is to announce and provides details about a project. Moreover, it solicits bids from contractors who want to complete the project. Here ABC Electronics has a need for a security system, but in order to make it public and to get price quotes they need to write a request for proposals so as to get bids from interested contractors.