What is the set of rules for writing readable code imposed by a company called?

The term that describes the set of rules for writing readable code defined by a company is known as a "code standard." This set of standards usually includes conventions related to naming variables, the structure of functions, indentation styles, and other formatting rules that aim to promote consistency and readability within the codebase.

Using a code standard helps teams of developers maintain a uniform coding style, which makes it easier for team members to read and understand each other's code, thus improving collaboration and reducing the likelihood of introducing bugs. It ensures that when multiple developers are working on the same code, they can do so without the confusion that might arise from differing styles.

While a guideline and house style can suggest recommended practices, the code standard is more formal and typically enforced by the organization. A style sheet generally refers to a document defining the presentation of a document written in markup languages like HTML or XML, rather than code readability.

Therefore, the correct answer accurately reflects the formalized set of rules that defines how code should be written for clarity and consistency within an organization.