Conservation requires an understanding that

A) properties of objects remain the same, even if you change their shape or arrangement.
B) dreams are real.
C) one's perspective is the same as other people's.
D) environmental features, such as mountains and thunder, have been designed and created by people.

Conservation

Conservation is a concept in cognitive development, demonstrating that a child understands that quantities remain consistent despite changes in shape or arrangement, typically developed during the concrete operational stage.

Properties of Objects

Intrinsic and extrinsic attributes or features of an object, including size, shape, color, and texture.

Shape

The external form, contours, or outline of someone or something.