Me plz i'm not to sure i read it and the definition but don't know

Answer : The correct option is, (B) Two compounds with same chemical formula but different orientation.

Explanation :

Stereoisomers : It is defined as the isomers which have the same bond connectivity but different arrangement of the groups or the atoms in the space.

That means the two compounds have the same chemical formula, same bond connectivity and same space but different orientation.

Hence, the stereoisomers are the two compounds with same chemical formula but different orientation.

The correct option is (B) Two compounds with same chemical formula but different orientation.

Stereoisomers are those molecules which share the same molecular formula and arrangement of atoms, but they differ from one another in 3-dimensional space. All isomers can be classified as either constitutional isomers and stereoisomers.The two main types of stereoisomerism are DiaStereomerism and Optical Isomerism. Steroisomers are also called configurational isomers.

there is none because earth is stationary and flat.