MD&A (Management's Discussion and Analysis)
Also called MD&A.
Management's own explanation of the company's results, financial condition and trends, in the 10-K and 10-Q.
In the 10-K it's Item 7: management's perspective on the year's business results. It may also discuss the risks the company faces. Source 1
Read it next to the financial statements: it's where management explains the numbers in words. Source 2