Final answer:
The statement is true as a body must retain the line of gravity within its base to remain stable.
Step-by-step explanation:
The statement 'For a body to remain stable, it must retain the line of gravity within its base' is True. When the line of gravity is inside the base of an object, it creates stability and prevents the object from tipping over. For example, a pyramid shape has a wide base, allowing it to remain stable because the line of gravity falls inside the base.
Learn more about Stability and Line of Gravity in bodies