Verified Answer :

Bthey share a common side

Answer:

The statement which is true about adjacent angles is they share a common side.

Step-by-step explanation:

To Find : Which statement about adjacent angles is true?

Solution :

Definition:Two angles are said to be Adjacent when they have a common side and a common vertex

So, Option B is true i.e.  they share a common side.

Hence The statement which is true about adjacent angles is they share a common side.