Do covalent bonds have conductivity

no

Explanation

i researched

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.