First of all, you can rule out options A and C because they are talking about covalent bonds. The cohesive property of water is given by intermolecular interactions, and covalent bonds are intramolecular (covalent bonds are the type of bonds that hold the atoms of a molecule together).
Now, you are left with options B and D. But option D is talking about bonds with different types of molecules, not with water. It is true that water can form hydrogen bonds with other molecules, but this property has nothing to do with its cohesivity. Cohesion is, by definition, the attraction of molecules of the same type. This leaves us with option B, which is talking about intermolecular interactions between water molecules, so this one is the only correct option.
Although chlorine itself usually does not cause environmental harm, it combines rapidly to form chemicals such as dioxins that pollute water, contaminate fish and transfer to humans and larger animals that eat the fish.
