Covalent bonds usually form at room temperature solids and liquids solids or liquids or gases solids and gases only solids

Covalent bonds usually form solids, liquids, or gases at room temperature, as long as the atmospheric temperature is normal. The answer would then be B. Unlike with ionic bonds, they form solids at room temperature.

Other features of covalent bonds include low melting and boiling point, the compounds have definite shape and it occurs between two non-metals.