Final answer:
The default origin point of a relative object is the top left corner of the element's containing block.
Step-by-step explanation:
The origin point of a relative object by default is A. The top left corner of the element's containing block. When positioning elements using CSS for example, an element with position: relative; is positioned relative to its normal position. The offsets of 'top', 'right', 'bottom', and 'left' properties are applied with respect to the top-left corner of the containing block, not the center, bottom right corner, or an undefined point.