Question

which best describes most covalent compounds?
warm
cold
brittle
resilient

Explanation:

Covalent compounds have weak intermolecular forces. They are generally brittle as the covalent bonds are directional and when force is applied, the layers shift and the bonds break. They are not warm (thermal property not relevant in this context for the key characteristic), not cold (again not the main property), and not resilient (resilient implies ability to return to original shape which covalent compounds don't have due to their brittleness).

Answer:

brittle