What important issues might an investigator encounter when collecting arson evidence? Group of answer choices

The evidence might be fragile from the burning

There aren't any major issues associated with arson evidence.

The evidence might still be on fire.

It might smell like gasoline.

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.