The substance which can flow is:
both (B) and (C)
Explanation for correct option:
(D) The molecules of gases and liquids are separated by a large distance. They have greater gaps or intermolecular spaces, in other words. Intermolecular attractions are minimal due to the enormous intermolecular forces, allowing liquids and gases to flow.
Solids, on the other hand, have a lot less intermolecular space. The intermolecular interactions are strong, which gives them a distinct form and makes them hard. As a result, solids do not flow. So, this is the correct option.
Thus, option (D) is the correct answer.