I believe the answer to your question will be hard water because it has more minerals and that would make it the preferred water to drink.
The answer is electrons.
A covalent bond is a type of chemical bond where atoms share electrons. Covalent bonds are also referred to as molecular bonds because they form molecules when bonded.
This type of bond occurs between non-metals. An example of a compound or a molecule that is formed through covalent bonding is water. It is a combination of two hydrogen atoms bonded with an oxygen atom. H₂O
My guess is D. Usually, animals try to scare an assailant and attack as a last resort.