Question

why are liquids well suited for hydraulics? liquids have low densities. liquids are incompressible. liquids change volume easily. liquids have few molecules.

Explanation:

In hydraulics, the property of being incompressible is crucial. Liquids are nearly incompressible, meaning their volume doesn't change much under pressure, allowing for efficient transfer of force. Low density, ease of volume - change, or number of molecules are not the key reasons for their suitability in hydraulics.

Answer:

Liquids are incompressible.