Which data structure allows operations on elements in a FIFO manner?

The data structure that allows operations on elements in a FIFO (First In, First Out) manner is the queue. In a queue, elements are added to the back (tail) and removed from the front (head). This ensures that the first element added to the queue is the first one to be removed, making it ideal for scenarios like task scheduling, resource management, or any situation where order of processing is critical.

For example, consider a print queue where print jobs are processed in the order they are received; the first job submitted will be the first one printed, following the FIFO principle. This characteristic distinguishes queues from other data structures such as stacks, which operate in a LIFO (Last In, First Out) manner, or arrays and linked lists, which do not inherently impose any specific order for processing elements.

Thus, the queue is specifically designed for FIFO operations, making it the correct answer in the context of this question.