Which of the following correctly describes a characteristic of algorithms?

Algorithms are precise, step-by-step procedures designed to solve specific problems or perform specific tasks. One of their key characteristics is that they must be executable by a computer. This means that the steps within an algorithm must be defined in a way that a computer can understand and perform, ensuring that the algorithm can lead to an accurate and efficient solution.

An algorithm should have clearly defined inputs and outputs, along with a set of rules or instructions that guide the computer in processing the data. This characteristic is essential for algorithm implementation in programming, as it allows the steps of the algorithm to be translated into code that a computer can execute.

The other options present misconceptions about algorithms. For instance, algorithms are designed to be clear and specific rather than vague. They aim to provide specific solutions based on their defined procedures. Additionally, while some algorithms may seem inflexible, they can often be modified or adapted to solve different problems or optimize their performance. Thus, the defining trait of being executable by a computer highlights the importance of precision and clarity in the design of algorithms.