All of the following describe the unique role of water except- Water is polar and cannot dissolve nonpolar compounds such as oil

Water is considered a universal solvent because it can dissolve more substances than any other liquid.

Water is nonpolar and can dissolve nonpolar compounds such as oil

Water has the ability to form hydrogen bonds

since electrons are negative the answer is neagtaive

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.