Which of the following actions would involve replacing missing peripherals?

Replacing missing peripherals involves taking measures to obtain or substitute hardware components necessary for the functioning of a system or project. Ensuring low-cost solutions directly correlates with the idea of acquiring or replacing these peripherals in a cost-effective manner. This choice suggests a focus on finding economical options to obtain the required hardware, which is fundamental when dealing with missing peripherals.

In contrast, adjusting the project timeline merely shifts deadlines and does not address the issue of acquiring the necessary components. Updating documentation pertains to revising written or digital records, which is not related to the physical hardware requirements. Implementing budget cuts may limit spending but may not specifically focus on replacing peripherals, leading to possible neglect of essential hardware needs. Thus, focusing on low-cost solutions is the correct approach when addressing the need to replace missing peripherals.