The rule that requires financial statements to reflect the assumption that the business will continue operating instead of being closed or sold, unless evidence shows that it will not continue, is the:

Going concern assumption

Explanation:

The going concern principle is the assumption that an entity will remain in business for the foreseeable future.

This assumption holds in the absence of significant information to the contrary such as inability to meet obligations as they fall due

i would say their habit of breaking down.

answer; buying the bill at a discount from the face value to be received at maturity;