Question

which characteristic is shared by both dark matter and baryonic matter? (1 point)
they both have been directly observed by scientists.
they both have gravity.
they both interact with each other.
they both are capable of absorbing light.

Explanation:

Dark matter has not been directly observed, and it does not interact with light (including absorbing light) in the way baryonic matter does. However, both dark matter and baryonic matter have mass, and mass - having objects possess gravity. Also, while dark matter and baryonic matter are in the same universe, dark matter only interacts weakly with baryonic matter and not in the same way baryonic matter interacts with itself.

Answer:

They both have gravity.